{"title":"HM Digital","description":null,"products":[{"product_id":"1000ppm-calibration-solution","title":"HM Digital - 1000ppm Calibration Solution - TDS, 3 oz (90 ml)","description":"\u003cp\u003eNaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.\u003c\/p\u003e","brand":"Hydrofarm","offers":[{"title":"Default Title","offer_id":44946101928247,"sku":"HMDC1000","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/54b1f4fc6bdf4e796588b9cdd03a1943.jpg?v=1758083886"},{"product_id":"ec-tds-temp-waterproof-hydro-tester","title":"HM Digital - EC\/TDS\/Temp Waterproof Hydro Tester - COM-80","description":"\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eThe COM-80 is an economically priced, reliable EC\/TDS meter that is ideal for testing applications such as hydroponics \u0026amp; gardening, pools \u0026amp; spas, aquariums \u0026amp; reef tanks, water ionizers, drinking water and more.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eMeasures electrical conductivity (EC), total dissolved solids (TDS). Excellent for hydroponic nutrient testing.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eFour scales: EC: uS, mS; TDS: ppm, ppt \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eAutomatic Temperature Compensation (ATC)\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eWater resistant\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eMeasurement Range: 0-9990 \u003cem\u003eu\u003c\/em\u003eS; 0-5000 ppm; 0-9.9 mS; 0-5.0 ppt \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eDigital Calibration (push button) to any point within the meter's range\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eAuto-off function, data-hold function and low-battery indicator\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eDisplay: large and easy-to-read LCD screen includes simultaneous temperature reading\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eFactory Calibrated: The COM-80 meter is calibrated with a 1413 \u003cem\u003eu\u003c\/em\u003eS solution-can be recalibrated with digital calibration using the push buttons\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eIncludes a protective cap and batteries.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eSPECIFICATIONS\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eEC Range: \u003c\/span\u003e\u003cspan\u003e0-9990 \u003cem\u003eu\u003c\/em\u003eS; 0-9.9 mS \u003cbr\u003e \u003cspan\u003eTDS Range:\u003c\/span\u003e 0-5000 ppm (mg\/L); 0-5.0 ppt \u003cbr\u003e \u003cspan\u003eTemperature Range:\u003c\/span\u003e 1-80degC\/33-176degF \u003cbr\u003e \u003cspan\u003eResolution:\u003c\/span\u003e 1 \u003cem\u003eu\u003c\/em\u003eS\/ppm; 0.1 mS\/ppt \u003cbr\u003e \u003cspan\u003e Temp. resolution:\u003c\/span\u003e 0.1degC\/F \u003cbr\u003e \u003cspan\u003eAccuracy:\u003c\/span\u003e +\/- 2% \u003cbr\u003e \u003cspan\u003eEC-to-TDS Conversion Factor:\u003c\/span\u003e NaCl (avg of 0.5) \u003cbr\u003e \u003cspan\u003eCalibration:\u003c\/span\u003e Digital calibration by push button \u003cbr\u003e \u003cspan\u003eProbe:\u003c\/span\u003e Fixed \u003cbr\u003e \u003cspan\u003eHousing:\u003c\/span\u003e Water resistant\u003cbr\u003e \u003cspan\u003ePower source:\u003c\/span\u003e 3 x 1.5V button cell batteries (included) (model LR44 or equivalent)\u003cbr\u003e \u003cspan\u003eDimensions:\u003c\/span\u003e 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches) \u003cbr\u003e \u003cspan\u003eWeight:\u003c\/span\u003e 53.9 g (1.9 oz)\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e1 year warranty\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e","brand":"Hydrofarm","offers":[{"title":"Default Title","offer_id":44946103107895,"sku":"HMDCOM80","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/54c0603464cd49d842b8a14db12ab430.jpg?v=1758084087"},{"product_id":"ph-temperature-meter","title":"HM Digital - PH\/Temperature Meter - PH-80","description":"\u003cp\u003e\u003cspan\u003eThe PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics \u0026amp; gardening, pools \u0026amp; spas, aquariums \u0026amp; reef tanks, water ionizers, drinking water and more. \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eFEATURES \u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e\u003cul\u003e \u003cli\u003eMeasures pH and temperature\u003c\/li\u003e \u003cli\u003eOne-touch automatic digital calibration\u003c\/li\u003e \u003cli\u003eWater resistant\u003c\/li\u003e \u003cli\u003eSimultaneous temperature display\u003c\/li\u003e \u003cli\u003eSleek, lightweight design\u003c\/li\u003e \u003cli\u003eLarge LCD display\u003c\/li\u003e \u003cli\u003eAutomatic Temperature Compensation (ATC)\u003c\/li\u003e \u003cli\u003eAuto-off function, data-hold function and low-battery indicator\u003c\/li\u003e \u003cli\u003eIncludes storage solution in a sponge embedded in a translucent cap\u003c\/li\u003e \u003cli\u003eFactory Calibrated: The PH-80 meter is factory calibration to pH 7.0. The meter can easily and quickly be recalibrated with digital calibration to pH 4.0, 7.0 or 10.0 using the meter's simple one-touch process\u003c\/li\u003e \u003cli\u003eIncludes a cap, batteries, storage solution and pH 7.0 buffer\u003c\/li\u003e \u003c\/ul\u003e","brand":"Hydrofarm","offers":[{"title":"Default Title","offer_id":44946104549687,"sku":"HMDPHM80","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/5f205b064a558019e597a6fc4e9799bc.jpg?v=1758084198"},{"product_id":"replacement-tds-sensor-hm-500","title":"HM Digital - Replacement TDS Sensor HM-500 - Hydromaster EC\/ Probe","description":"\u003cp\u003eReplacement TDS sensor for HM Digital measurement devices. Measures water conductivity and nutrient levels. Compatible with Hydromaster EC meters.\u003c\/p\u003e","brand":"Hydrofarm","offers":[{"title":"Default Title","offer_id":44946105729335,"sku":"HMDSPC5","price":57.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/05ac84f70ec8af284815df3777ae11c6.jpg?v=1758084663"},{"product_id":"tds-3-handheld-tds-meter","title":"HM Digital - TDS-3 Handheld TDS meter","description":"\u003cp\u003eIdeal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficent and accurate due to its advanced microprocessor technology. It features a measurement range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1 ppm. From 1000 to 9990 ppm, the resolution is in increments of 10 ppm, indicated by a blinking image.\u003c\/p\u003e","brand":"Hydrofarm","offers":[{"title":"Default Title","offer_id":44946107072823,"sku":"HMDTDS3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/537749b30494fd0ac8a79e3812275cf2.jpg?v=1758084209"},{"product_id":"ph-orp-storage-solution","title":"HM Digital - PH\/ORP Storage Solution - PH-STOR pH Electrode","description":"\u003cp\u003eFor use with HM Digital's PH-200 and PH-80 (as well as other brands of pH meters). Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The sponge should be moist (not soaking wet).\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e","brand":"Hydrofarm","offers":[{"title":"Default Title","offer_id":44946107269431,"sku":"HMOPSTOR","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/89886dd007ae43c23b1251a86b273f01.jpg?v=1758083980"},{"product_id":"203385-hm-digital-dm-2-commercial-in-line-dual-tds-meter-1-2-qc","title":"Hm Digital - Meter, TDS, Inline, Dm-2, 1\/2\"QC","description":"\u003ch2\u003eHM Digital DM-2 Commercial In-Line Dual TDS Meter, 1\/2\" Quick-Connect\u003c\/h2\u003e\u003cp\u003eThe HM Digital DM-2 is a dual-input in-line meter that continuously displays total dissolved solids (TDS) for both feed and product water in a reverse osmosis (RO) or deionization (DI) system. Powered by advanced microprocessor electronics, it offers a dual range of 0-9990 ppm and is factory calibrated with a 342 ppm NaCl solution. This 1\/2\" Quick-Connect version installs directly into 1\/2\" tubing.\u003c\/p\u003e\u003cp\u003eInstalled on residential, commercial, and industrial RO and water purification systems including car washes, window washing, manufacturing, food processing, and drinking water plants. The dual feed\/product display allows operators to monitor membrane performance and determine when membrane replacement is required.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1\/2\" Quick-Connect T-fittings included\u003c\/li\u003e\n\u003cli\u003eDual-input feed and product display\u003c\/li\u003e\n\u003cli\u003eAXEON Part Number 203385\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDisplays feed and product TDS simultaneously\u003c\/li\u003e\n\u003cli\u003eDual range 0-9990 ppm (1 ppm resolution to 999 ppm, 10 ppm above)\u003c\/li\u003e\n\u003cli\u003eFactory calibrated with 342 ppm NaCl solution\u003c\/li\u003e\n\u003cli\u003eDigital recalibration supported\u003c\/li\u003e\n\u003cli\u003eDiagnostic error messaging\u003c\/li\u003e\n\u003cli\u003eShielded sensor cables\u003c\/li\u003e\n\u003cli\u003eAuto-off after 3 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eQuick-Connect T-fittings included for fast installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose HM Digital DM-2 Commercial In-Line Dual TDS Meter, 1\/2\" Quick-Connect\u003c\/h3\u003e\u003cp\u003eThe DM-2 puts continuous water quality data directly on the system, eliminating the need for handheld testing and giving operators an immediate read on RO membrane health. Reliable microprocessor electronics and tool-free quick-connect installation make it a standard choice for permanent in-line monitoring.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCommercial reverse osmosis systems\u003c\/li\u003e\n\u003cli\u003eCar washes and window cleaning\u003c\/li\u003e\n\u003cli\u003eFood and beverage processing\u003c\/li\u003e\n\u003cli\u003eManufacturing rinse water\u003c\/li\u003e\n\u003cli\u003eResidential drinking water systems\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Axeon","offers":[{"title":"Default Title","offer_id":51087896412471,"sku":"203385","price":185.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/b68vmhgg7kphkrj2vqec_142a2768-ab50-4cfe-b188-4fcb2e83d3d7.jpg?v=1757957597"},{"product_id":"210484-hm-digital-dm-2-commercial-in-line-dual-tds-meter-3-8-qc","title":"Hm Digital - Meter, TDS, Inline, Dm-2, 3\/8\" Qc","description":"\u003ch2\u003eHM Digital DM-2 Commercial In-Line Dual TDS Meter, 3\/8\" Quick-Connect\u003c\/h2\u003e\u003cp\u003eThe HM Digital DM-2 is a dual-input in-line meter that continuously displays total dissolved solids (TDS) for both feed and product water in a reverse osmosis (RO) or deionization (DI) system. Powered by advanced microprocessor electronics, it offers a dual range of 0-9990 ppm and is factory calibrated with a 342 ppm NaCl solution. This 3\/8\" Quick-Connect version installs directly into 3\/8\" tubing.\u003c\/p\u003e\u003cp\u003eInstalled on residential, commercial, and industrial RO and water purification systems including car washes, window washing, manufacturing, food processing, and drinking water plants. The dual feed\/product display allows operators to monitor membrane performance and determine when membrane replacement is required.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3\/8\" Quick-Connect T-fittings included\u003c\/li\u003e\n\u003cli\u003eDual-input feed and product display\u003c\/li\u003e\n\u003cli\u003eAXEON Part Number 210484\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDisplays feed and product TDS simultaneously\u003c\/li\u003e\n\u003cli\u003eDual range 0-9990 ppm (1 ppm resolution to 999 ppm, 10 ppm above)\u003c\/li\u003e\n\u003cli\u003eFactory calibrated with 342 ppm NaCl solution\u003c\/li\u003e\n\u003cli\u003eDigital recalibration supported\u003c\/li\u003e\n\u003cli\u003eDiagnostic error messaging\u003c\/li\u003e\n\u003cli\u003eShielded sensor cables\u003c\/li\u003e\n\u003cli\u003eAuto-off after 3 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eQuick-Connect T-fittings included for fast installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose HM Digital DM-2 Commercial In-Line Dual TDS Meter, 3\/8\" Quick-Connect\u003c\/h3\u003e\u003cp\u003eThe DM-2 puts continuous water quality data directly on the system, eliminating the need for handheld testing and giving operators an immediate read on RO membrane health. Reliable microprocessor electronics and tool-free quick-connect installation make it a standard choice for permanent in-line monitoring.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCommercial reverse osmosis systems\u003c\/li\u003e\n\u003cli\u003eCar washes and window cleaning\u003c\/li\u003e\n\u003cli\u003eFood and beverage processing\u003c\/li\u003e\n\u003cli\u003eManufacturing rinse water\u003c\/li\u003e\n\u003cli\u003eResidential drinking water systems\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Axeon","offers":[{"title":"Default Title","offer_id":51087896478007,"sku":"210484","price":198.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/b68vmhgg7kphkrj2vqec_1667e70c-3ea1-4dea-8915-fbfce3d455bc.jpg?v=1757957598"},{"product_id":"200906-axeon-normally-open-low-pressure-switch-15-30-psi","title":"Hm Digital - AXEON - Switch, Pressure, Low, N\/O, 15-30 PSI, 1\/4 in FNPT","description":"\u003ch2\u003eAXEON Low Pressure Switch, Normally Open, 15-30 PSI, 1\/4\" FNPT\u003c\/h2\u003e\u003cp\u003eThe AXEON 200906 is a normally open (N\/O) low pressure switch with a 15-30 PSI activation range and a 1\/4\" FNPT connection. It is designed to provide automatic shutoff and start-up control for reverse osmosis systems and pressurized storage tanks. The compact, universally interchangeable design replaces most standard low pressure switches.\u003c\/p\u003e\u003cp\u003eInstalled on the feed-water side of RO systems and pressure-driven water treatment equipment. Used to shut the system down when inlet pressure drops below a safe operating level, protecting pumps and membranes from dry-run damage. Common in residential, commercial, and light industrial water purification setups.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAXEON PN 200906\u003c\/li\u003e\n\u003cli\u003ePressure range 15-30 PSI\u003c\/li\u003e\n\u003cli\u003e1\/4\" FNPT connection\u003c\/li\u003e\n\u003cli\u003eNormally Open (N\/O)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLow pressure cut-off protection\u003c\/li\u003e\n\u003cli\u003e1\/4\" FNPT connection for easy plumbing\u003c\/li\u003e\n\u003cli\u003eUniversally interchangeable with most standard switches\u003c\/li\u003e\n\u003cli\u003eManual reset lever\u003c\/li\u003e\n\u003cli\u003eCompact form factor\u003c\/li\u003e\n\u003cli\u003eEasy installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose AXEON Low Pressure Switch, Normally Open, 15-30 PSI, 1\/4\" FNPT\u003c\/h3\u003e\u003cp\u003eThe AXEON 200906 protects upstream pumps and downstream membranes from low-pressure dry-run conditions and integrates cleanly into existing RO plumbing. Its universal footprint and manual reset lever make field replacement and commissioning straightforward.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReverse osmosis systems\u003c\/li\u003e\n\u003cli\u003ePressurized storage tanks\u003c\/li\u003e\n\u003cli\u003eBooster pump protection\u003c\/li\u003e\n\u003cli\u003eWater treatment skids\u003c\/li\u003e\n\u003cli\u003eLight industrial water systems\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Axeon","offers":[{"title":"Default Title","offer_id":51087896510775,"sku":"200906","price":113.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/697fab111d107bd78bb1ccc3a930d73a_974ec0ab-17ec-4e5b-8a76-b20a6d145a7f.jpg?v=1758241100"},{"product_id":"hm-digital-dm-2-commercial-in-line-dual-tds-meter","title":"Hm Digital - Meter, TDS, Inline, Dm-2, 1\/4\" Qc","description":"\u003ch2\u003eHM Digital DM-2 Commercial In-Line Dual TDS Meter, 1\/4\" Quick-Connect\u003c\/h2\u003e\u003cp\u003eThe HM Digital DM-2 is a dual-input in-line meter that continuously displays total dissolved solids (TDS) for both feed and product water in a reverse osmosis (RO) or deionization (DI) system. Powered by advanced microprocessor electronics, it offers a dual range of 0-9990 ppm and is factory calibrated with a 342 ppm NaCl solution. This 1\/4\" Quick-Connect version installs directly into 1\/4\" tubing.\u003c\/p\u003e\u003cp\u003eInstalled on residential, commercial, and industrial RO and water purification systems including car washes, window washing, manufacturing, food processing, and drinking water plants. The dual feed\/product display allows operators to monitor membrane performance and determine when membrane replacement is required.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1\/4\" Quick-Connect T-fittings included\u003c\/li\u003e\n\u003cli\u003eDual-input feed and product display\u003c\/li\u003e\n\u003cli\u003eAXEON Part Number 200881\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDisplays feed and product TDS simultaneously\u003c\/li\u003e\n\u003cli\u003eDual range 0-9990 ppm (1 ppm resolution to 999 ppm, 10 ppm above)\u003c\/li\u003e\n\u003cli\u003eFactory calibrated with 342 ppm NaCl solution\u003c\/li\u003e\n\u003cli\u003eDigital recalibration supported\u003c\/li\u003e\n\u003cli\u003eDiagnostic error messaging\u003c\/li\u003e\n\u003cli\u003eShielded sensor cables\u003c\/li\u003e\n\u003cli\u003eAuto-off after 3 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eQuick-Connect T-fittings included for fast installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose HM Digital DM-2 Commercial In-Line Dual TDS Meter, 1\/4\" Quick-Connect\u003c\/h3\u003e\u003cp\u003eThe DM-2 puts continuous water quality data directly on the system, eliminating the need for handheld testing and giving operators an immediate read on RO membrane health. Reliable microprocessor electronics and tool-free quick-connect installation make it a standard choice for permanent in-line monitoring.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCommercial reverse osmosis systems\u003c\/li\u003e\n\u003cli\u003eCar washes and window cleaning\u003c\/li\u003e\n\u003cli\u003eFood and beverage processing\u003c\/li\u003e\n\u003cli\u003eManufacturing rinse water\u003c\/li\u003e\n\u003cli\u003eResidential drinking water systems\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Axeon","offers":[{"title":"Default Title","offer_id":51087898214711,"sku":"200881","price":155.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/b68vmhgg7kphkrj2vqec_be1b237a-279e-4601-9c33-dbcd748cb47a.jpg?v=1757957648"},{"product_id":"hm-digital-qc-1-quick-check-tds-monitor-1-4-push-in","title":"Hm Digital - Push-In, 1\/4\" Monitor, TDS, CHECk Quick, Qc-1","description":"\u003ch2\u003eHM Digital QC-1 Quick Check TDS Monitor, 1\/4\" Push-In\u003c\/h2\u003e\u003cp\u003eThe HM Digital QC-1 is a simple push-button TDS and conductivity monitor that uses a green\/red LED to indicate whether water quality is within an acceptable range or the system needs service. Eight programmable set points are selected via internal dip switches, and the unit ships factory calibrated to 100 ppm NaCl. The 1\/4\" push-in connection installs directly into 1\/4\" tubing.\u003c\/p\u003e\u003cp\u003eInstalled on residential and commercial reverse osmosis and deionization systems where a clear pass\/fail indication is more useful than a numerical readout. Used in RO storage tank outlets, drinking water dispensers, and DI polishing loops to alert users when membrane or resin replacement is due.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1\/4\" push-in connection\u003c\/li\u003e\n\u003cli\u003eEight dip-switch-selectable set points\u003c\/li\u003e\n\u003cli\u003eAvailable with 1\/4\" quick connect tee or no fitting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePush-button green\/red status indication\u003c\/li\u003e\n\u003cli\u003eTests TDS or conductivity\u003c\/li\u003e\n\u003cli\u003eEight programmable set points via dip switch\u003c\/li\u003e\n\u003cli\u003eBright LED indicators\u003c\/li\u003e\n\u003cli\u003eFactory calibrated to 100 ppm NaCl\u003c\/li\u003e\n\u003cli\u003eNo recalibration required\u003c\/li\u003e\n\u003cli\u003eQuick installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose HM Digital QC-1 Quick Check TDS Monitor, 1\/4\" Push-In\u003c\/h3\u003e\u003cp\u003eThe QC-1 gives end users an immediate, language-free signal that their water purification system is performing, removing the interpretation step that comes with numeric TDS displays. With eight selectable set points, it adapts to a wide range of RO and DI quality targets.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReverse osmosis service indicators\u003c\/li\u003e\n\u003cli\u003eDeionization polishing loops\u003c\/li\u003e\n\u003cli\u003eDrinking water dispensers\u003c\/li\u003e\n\u003cli\u003eLight commercial water systems\u003c\/li\u003e\n\u003cli\u003eRetail and vending water equipment\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Axeon","offers":[{"title":"Default Title","offer_id":51087901032759,"sku":"201383","price":65.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/b04dccfa79d49306adb0289ff9c9475e.jpg?v=1758241226"},{"product_id":"hm-digital-dm-1-dual-tds-meter","title":"Hm Digital - Meter, TDS, Inline, Dm-1, 1\/4\" Tee","description":"\u003ch2\u003eHM Digital DM-1 Dual In-Line TDS Meter, 1\/4\" Tee\u003c\/h2\u003e\u003cp\u003eThe HM Digital DM-1 is a dual-input in-line meter that measures total dissolved solids (TDS) for both feed and product water on reverse osmosis and water purification systems. The compact display switches between feed and product readings, allowing operators to track membrane rejection at a glance. This version ships with 1\/4\" quick-connect tee fittings for direct installation in 1\/4\" tubing.\u003c\/p\u003e\u003cp\u003eMounted on residential, commercial, and light industrial RO and DI systems where a permanent TDS readout is needed. Used to monitor membrane performance over time and identify when membrane replacement is required. Common on undersink RO, point-of-use coolers, and small commercial purification skids.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1\/4\" quick connect tee fittings\u003c\/li\u003e\n\u003cli\u003eDual-input feed and product display\u003c\/li\u003e\n\u003cli\u003eDual range 0-9990 ppm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDisplays feed and product TDS via in\/out electrode probes\u003c\/li\u003e\n\u003cli\u003eDual range 0-9990 ppm (1 ppm resolution to 999 ppm, 10 ppm above)\u003c\/li\u003e\n\u003cli\u003eAdvanced microprocessor electronics\u003c\/li\u003e\n\u003cli\u003eAuto-off after 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eFactory calibrated with 342 ppm NaCl solution\u003c\/li\u003e\n\u003cli\u003eRecalibration via mini-screwdriver\u003c\/li\u003e\n\u003cli\u003eQuick installation with included 1\/4\" quick-connect fittings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose HM Digital DM-1 Dual In-Line TDS Meter, 1\/4\" Tee\u003c\/h3\u003e\u003cp\u003eThe DM-1 delivers permanent, dual-source TDS monitoring at a price point suited to residential and light commercial RO. Field recalibration support and quick-connect installation keep service time and cost low.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUndersink reverse osmosis systems\u003c\/li\u003e\n\u003cli\u003ePoint-of-use water coolers\u003c\/li\u003e\n\u003cli\u003eSmall commercial RO skids\u003c\/li\u003e\n\u003cli\u003eDeionization systems\u003c\/li\u003e\n\u003cli\u003eResidential water purification\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Axeon","offers":[{"title":"Default Title","offer_id":51087901065527,"sku":"200878","price":85.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/kd3bgeh0pwpyrauejzmq_5301ab3c-3597-4a8b-ada1-2ad604049534.jpg?v=1757957715"}],"url":"https:\/\/www.blacklabelsupply.io\/collections\/hm-digital.oembed","provider":"BLACK LABEL","version":"1.0","type":"link"}