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3M O-rings, Filter Housing Wrenches, Water Filter System Parts and DIY Water Tests

3M O-rings, Filter Housing Wrenches, Water Filter System Parts and DIY Water Tests

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  1. Regular Price: $8.99

    Special Price $4.99

    As low as: $3.29
    AquaPure Drinking Water Filter Housing O-ring #63597174 by 3M Purification. Keep your system from leaking and causing expensive damages by replacing your o-rings every other time you change your water filters. Be sure to order Dow 111 silicone sealant so the o-rings will seal properly. Never use petroleum based greases such as Vasoline. Use the best sealant, use Dow 111 silicone. Learn More
  2. Regular Price: $38.86

    Special Price $29.95

    As low as: $24.95

    3M47-234825 SQC Sanitizing Service Reusable Cartridge. AP1-E 3M Service Cartridge for SQC drinking water systems by Water Factory, CUNO and 3M

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  3. Regular Price: $19.69

    Special Price $15.99

    As low as: $11.95
    3M 50-1265 RO Service & Sanitizing Plug for 3MRO301, 3MRO401 and 3MRO501 Reverse Osmosis Drinking Water Systems from 3M or any of the Water Factory SQC systems such as the SQC3, SQC4-HF, SQC2 or SQC1. Use these bypass plugs in place of filters during the sanitizing of your RO system. This is must for all SQC reverse osmosis system owners. Order one for each filter in your system. Learn More
  4. Regular Price: $8.99

    Special Price $4.99

    As low as: $3.29
    AquaPure Drinking Water Filter Housing O-ring #6889832 by 3M Purification. Keep your system from leaking and causing expensive damages by replacing your o-rings every other time you change your water filters. Be sure to order Dow 111 silicone sealant so the o-rings will seal properly. Never use petroleum based greases such as Vasoline. Use the best sealant, use Dow 111 silicone. Learn More
  5. Regular Price: $5.99

    Special Price $3.99

    As low as: $1.79
    Dow Corning/Molykote ® 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

    Dow 111 Silicone MSDS Safety Sheet

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  6. Regular Price: $24.99

    Special Price $17.49

    As low as: $16.95
    Dow Corning/MolyKote 111 ® 5.3 ounce Tube of O-Ring Silicone Sealant and Lubricant. FDA and NSF approved. Simply the best! (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Filter Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system? Learn More
  7. Regular Price: $15.75

    Special Price $12.99

    6 in 1 Home Water Test Kit by 3M. Use this 3M DIY water quality test for convenient on-site testing. The 3M DIY water quality test kit provides quick analysis. Learn More
  8. Regular Price: $12.99

    Special Price $8.99

    As low as: $7.49
    AquaPure 68900-34 Adjustable Strap Wrench For Water Filter Housings - Universal Strap Wrench; Works with Most Water Filter Housings. AquaPure 68900-34 Adjustable Strap Wrench: Use for twisting off the canister or sump on many water filter housings. The Adjustable Strap Wrench can be used with many water filtration housings. The strap adjusts to the size of the water filter housing. Do NOT use the AquaPure 68900-34 Adjustable Strap Wrench to tighten the water filter housing sump. Overtightening the sump can cause damage to the o-rings and make re-opening the housing sump difficult. You should only hand tighten the housing sump. The AquaPure 68900-34 Adjustable Strap Wrench makes replacing water filters easy. Learn More
  9. Regular Price: $42.95

    Special Price $29.99

    As low as: $20.00
    HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout. HM Digital introduces its new AquaPro series, a line of handheld TDS/EC meters with a sleek design that's perfect for today's modern kitchen. The AquaPro digital water testers are the next generation for today's tech-savvy and health-conscience consumer. Learn More
  10. Regular Price: $27.99

    Special Price $19.99

    Ida's Iron Check is designed to specifically react with iron, without interference from other heavy metals that may be present. ITS # 481046 UPC #809762810465 Learn More
  11. Regular Price: $27.99

    Special Price $19.99

    John's Copper water test is an alternative to wet chemical copper tests. Quick results are obtained in less than 1 minute ITS # 480042 UPC #809762800428 Learn More
  12. Regular Price: $39.99

    Special Price $27.00

    TDS-N TDS Meter. Test your water for total dissolved solids. Learn More
  13. Regular Price: $29.99

    Special Price $19.99

    As low as: $11.99
    PR-2-KIT Precipitator 2 Repair Kit - Includes 4 replacement iron rods, two aluminum rods and two fuses. If you have the old style PR-2 Precipitator with the WaterFiltersOnline.com Logo and the switch in the center order the first rod and fuse kit. If you have the new style PR-2 Precipitator without the WaterFiltersOnline.com Logo and the switch on the side order the second rod and fuse kit. Learn More
  14. $19.99
    pH & Total Alkalinity test strips are designed for both measurements. Gives reproducible results for each test separately. ITS # 480005 UPC #809762800053 Learn More
  15. Regular Price: $49.99

    Special Price $37.99

    As low as: $17.99
    TDS Meter - Tester. The Only Way To Know If Your Reverse Osmosis RO Membrane Is Performing Correctly - Tests for TDS - Total Dissolved Solids. A Must For All RO System Owners. Compare Incoming Feed Water To Treated Water - Replace Membrane If Less Than 80% of TDS Is Being Removed - The lower the TDS level in the water, the more efficiently your body's cells actually get hydrated by the water that you drink. The higher the TDS levels in the water, the greater the probability of harmful contaminants that can pose health risks or hinder the absorption of water molecules on the cellular level. Simple to use for Reverse Osmosis membrane monitoring. We really like this tester and think that anyone who wants to know about the quality of their water should have one of these TDS Meter Testers to monitor their RO membrane. Learn More
  16. $19.99
    Total Hardness test strips offer a wide range of detection and calibrated to be both accurate and sensitive. ITS # 480008 UPC #809762800084 Learn More
  17. Regular Price: $27.99

    Special Price $19.99

    Free & Total Chlorine test strips are perfect for determining whether or not you have the correct amount of sanitizer present. ITS #480655 UPC # 809762806550 Learn More
  18. Regular Price: $35.99

    Special Price $19.99

    TDS Meter - Tester To Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester Learn More
  19. Regular Price: $59.99

    Special Price $39.99

    As low as: $24.99
    TDS-3 Handheld Pure Water Testing Meter For Total Dissolved Solids With Carrying Case. HM Digital. Features Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. Hold Function: saves measurements for convenient reading and recording. Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Built-in digital thermometer Display: large and easy-to-read LCD screen. Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. TDS Range: 0 - 9990 ppm (mg/L) Temp. Range: 0 - 80 degrees Celsius Resolution: 1 ppm, 1 degree Celsius (also available in 10 ppm) Accuracy: +/- 2% ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50 degrees Celsius (33 to 122 degrees Fahrenheit) Power source: 2 x 1.5V button cell batteries (included) Battery life: 1000 hours of usage Dimensions: 15.5 x 3.1 x 2.3cm (6.1 x 1.25 x 1 inches) Weight with case: 76.5g (2.7 oz) Weight without case: 56.7g (2 oz) Learn More
  20. Regular Price: $49.99

    Special Price $39.99

    As low as: $19.99
    TDS Meter - Dual Mode - Installs Inline - Check the TDS level with the push of a button. Now you can easily check to make sure the water from your reverse osmosis system is top quality. Measure the tap water coming in vs. the purified water going out of your system at any time. Very easy installation. FEATURES Displays TDS levels of the feed water and product water with in & out electrode probes. Highly efficient and accurate due to its advanced microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use. Comes equipped with John Guest Quick-Connect T-fittings as shown. Installs quickly and easily. SPECIFICATIONS Range: 0-9990 ppm Accuracy: ±2% Always know if your RO membrane is performing correctly! Learn More
  21. Regular Price: $69.99

    Special Price $49.99

    As low as: $29.99
    TDS Meter Dual Mode Readings - Professional Grade - Easily Installs Inline - Very Simple To Use. Measure the tap water coming in vs. the purified water going out of your system at any time. Use the meter to determine when the filters need to be changed. Highly efficient and accurate due to its advanced microprocessor technology. Displays TDS levels of the Feed Water and Product Water with in & out electrode probes. Auto-Off function conserves battery power. The unit shuts off automatically after 20 seconds. Dual Range - Measures from 0-999 ppm, with a resolution of 1 ppm. Learn More
  22. Regular Price: $76.95

    Special Price $59.99

    As low as: $47.99
    FOR THE PROFESSIONAL ! ------ COMBO METER / TESTER FOR EC / TDS / TEMP - WATERPROOF. The only handheld TDS meter / EC meter with full scale digital calibration. A water tester that is perfect for both consumer or commercial use. Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. Learn More
  23. Regular Price: $8.99

    Special Price $4.99

    As low as: $2.99
    Hanna ® TDS Calibration Solution 1382 PPM for calibrating TDS Meters / Testers to use for testing Reverse Osmosis RO Systems. # 70032 Learn More
  24. Regular Price: $79.99

    Special Price $49.99

    The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more.

     

    FEATURES

    • Measures pH and Temperature
    • One-touch automatic digital calibration
    • Water resistant
    • Simultaneous temperature display
    • Sleek, lightweight design
    • Large LCD display
    • Automatic Temperature Compensation (ATC)
    • Auto-off function, data-hold function and low-battery indicator
    • Includes storage solution in a sponge embedded in a translucent cap
    • Factory 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.
    • Includes a cap, batteries, storage solution and pH 7.0 buffer
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  25. Regular Price: $119.99

    Special Price $84.99

    As low as: $69.99
    Incredibly accurate! A pH tester that is perfect for both consumer or commercial use. Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more. Measures pH and Temperature. Auto-ranging three point calibration with digital fine tuning Includes 4 pH buffer solution in a sponge embedded in a clear cap, so you can see if it's dried up. Waterproof housing. Simultaneous temperature display. Measurement Range: 0-14 pH. Digital Calibration (push button). Auto-off function, data-hold function and low-battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading. Factory Calibrated: The PH-200 meter is three-point factory calibrated to 4, 7, and 10 pH. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. Includes a cap, batteries, and lanyard. pH Range: 0 - 14 Temperature Range: 0-80 °C; 32-176 °F Resolution: 0.01 pH; Temperature resolution is 0.1 °C/F Accuracy: +/- .02% Calibration: Digital calibration by push button. Electrode: Replaceable glass sensor and reference tube electrodes Housing: Waterproof (submersible; floats) Power source: 3 x 1.5V button cell batteries (included) Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) Weight without case: 96.4 g (3.4 oz) .

    SP-P2 Preplacement Sensors

    Ph Meter Buffer Solution

    Ph Meter Storage Solution

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  26. Regular Price: $59.99

    Special Price $45.99

    As low as: $39.99
    HM Digital SP-P2 Replacement Sensor for PH-200 PH Meter Learn More
  27. Regular Price: $19.99

    Special Price $13.99

    As low as: $10.99
    HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite shelf life. Variety pack of pH buffer solution. Simple to use. Powder has an indefinite shelf life. Total volume: 1.2 liters. Each powder packet makes 100 ml of solution (when mixed with distilled or deionized water) Contents: 3 packets of 4.0 pH, 6 packets of 7.0 pH, 3 packets of 10.01 pH Extra: Includes one empty 100 ml bottle Accuracy: +/- 0.02 pH at 25 degrees Celsius Preparation directions included with the pack. Learn More
  28. Regular Price: $23.99

    Special Price $13.99

    As low as: $11.99
    Hanna ® pH 7.01 Buffer Solution HI7007M used to calibrate meters. Hanna pH buffers are made of Potassium Dihydrogen Phosphate and Disodium Hydrogen Phosphate and are standardized with a pH meter that is calibrated to NIST primary standard buffer solutions (NIST 186Ie & 186IIe and NIST 158g S.R.M.). 230 ml bottle. Learn More
  29. Regular Price: $24.99

    Special Price $13.99

    As low as: $11.99
    Hanna ® HI70300M Storage Solution For pH & Orp Electrodes. 230 ml bottle. Hanna storage solutions are prepared with high grade Potassium Chloride and Potassium Hydrogen Phthalate by titration with NIST 2201 standardized Silver Nitrate and NIST 84j standardized Sodium Hydroxide Solution, respectively. Learn More
  30. Regular Price: $22.99

    Special Price $15.99

    As low as: $12.99
    PH Water Tests - Bottle Of 50 Individual Home Tests - Quick Results. Use with ease in your own home. Find out what level of water quality is coming into your house. Very simple use and very fast results. Learn More
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A History of Innovation

For more than a century, 3M has applied innovation and technology to improving their customers' lives and supporting their business goals. Today the company, from its headquarters in St. Paul, Minnesota, serves industrial and commercial customers and consumers in nearly 200 countries. The 3M brand, across thousands of products, represents consistency, superior quality, and value. 3M's success begins with its culture of creative collaboration that inspires a never ending stream of powerful technologies and product solutions that make life better. 3M has an ability to apply technologies — often in combination — to an endless array of real-world customer needs. Of course, all of this is made possible by the people of 3M, and their singular commitment to make life easier and better for people around the world. 3M is committed to providing innovative, cost-effective products that help protect people, equipment, and our environment. 3M Purification Inc. (formerly CUNO Incorporated), provides filtration and separation solutions for residential, food service, science labs, industrial, marine, and other applications.

* 3M PURIFICATION ® IS THE REGISTERED TRADEMARK OF 3M INC., THE MANUFACTURER OF 3M PRO, SQC, WATER FACTORY, CUNO, AQUA-PURE ® BRANDS OF RO REVERSE OSMOSIS, 3M FULL FLOW SYSTEMS, 3M WHOLE HOUSE SYSTEMS, 3M UNDER SINK DRINKING WATER SYSTEMS, 3M DEDICATED FAUCET SYSTEMS, AQUA-PURE REFRIGERATOR AND ICE MAKER FILTERS, OCS COFFEE AND RELATED WATER TREATMENT EQUIPMENT. AKA AQUAPURE, COOLER MATE, FAUCET MATE, 3M PRO and SQC SANITARY QUICK CHANGE