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Water Quality & Instrumentation - 375 - Blowout Sale! Save up to 54%


Blowout Sale! Up to 54% off on Water Quality & Instrumentation at In The National Interest. Top brands include Milwaukee, Ade Advanced Optics, Extech, Sunmallow, Smarthome SH, Home-Brew.com, American Marine, Just Utile, Sonkir, Micro Essential Lab, Bartovation, UASure, Agriculture Solutions, RecoverPad, Eco-Patch®, API, Brewing America, & Lxuemlu. Hurry! Limited time offers. Offers valid only while supplies last.



Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
By Milwaukee
In Stock
$135.04
$120.00
You Save: 11%

mpn: MA871, ean: 0783942601909,

Milwaukee MA871 Digital Sugar Refractometer with Automatic Temp Compensation, Yellow LED, 0 to 85 percent Brix, +/- 0.2 percent Accuracy, 0.1 percent Resolution is suitable for a wide range of professional applications.Range 0-85% Brix. Resolution 0....


Ade Advanced Optics BCBI9177 Beer Wort and Wine Refractometer, Dual Scale - Specific Gravity 1.000-1.120 and Brix 0-32%, Replaces Homebrew Hydrometer (Aluminum)
Ade Advanced Optics BCBI9177 Beer Wort and Wine Refractometer, Dual Scale - Specific Gravity 1.000-1.120 and Brix 0-32%, Replaces Homebrew Hydrometer (Aluminum)
By Ade Advanced Optics
In Stock
$22.99

mpn: BCBI9177, ean: 0704405061597,

This refractometer is for measuring the sugar content of beer and includes an automatic temperature compensation of 10 - 30 degree Celsius. This refractometer can replace your hydrometer for easier and more accurate measurements. Simply use the dropp...


Extech PH100 ExStik pH Waterproof Meter
Extech PH100 ExStik pH Waterproof Meter
By Extech
In Stock
$99.99
$71.99
You Save: 28%

mpn: PH100, ean: 5053184545480,

ExStik pH tester features a flat pH sensor making it ideal for testing semisolids and surfaces. Flat surface also reduces the chance of accidental breakage of the electrode tip-perfect for rugged field use! Built-in smart chip simplifies calibration ...


pH Meter & Temperature Meter. Range: pH 0.00 to 14.00. Precision ± 0.01pH. Large Easy to Read LCD Screen. 6 Free Calibration Powders and Chamios Cloth.
pH Meter & Temperature Meter. Range: pH 0.00 to 14.00. Precision ± 0.01pH. Large Easy to Read LCD Screen. 6 Free Calibration Powders and Chamios Cloth.
By Sunmallow
In Stock
$13.47

ean: 0609408972386,

This pH and Temperature Meter has all the features you need for commercial or household use:Water purification applications, waste-water regulation, aquaculture, hydroponics, labs & scientific testing, pools & spas, ecology testing, wine making, agri...


Brix Refractometer for Homebrew Beer Wort, Smarthome SH Dual Scale Automatic Temperature Compensation 0-32% Specific Gravity Hydrometer with ATC
Brix Refractometer for Homebrew Beer Wort, Smarthome SH Dual Scale Automatic Temperature Compensation 0-32% Specific Gravity Hydrometer with ATC
By Smarthome SH
In Stock
$29.99
$15.99
You Save: 47%

mpn: unknown, ean: 0689771725239,

Smarthome SH Dual Scale Brix Refractometer with ATC - the Best Refractometer for Home Brewing, Wine or Beer Making This refractometer is for measuring the sugar content of beer and includes an automatic temperature compensation of 10 - 30 degree Ce...


Home-Brew.com TY-95MM-2SU8 Alcoholmeter/Hydrometer / Glass Test Cylinder
Home-Brew.com TY-95MM-2SU8 Alcoholmeter/Hydrometer / Glass Test Cylinder
By Home-Brew.com
In Stock
$17.99
$17.95

mpn: TY-95MM-2SU8,

Handy Test Kit for wine making and moonshine.30 cm premium alcoholmeter. 30 cm premium hydrometer. 13 inch. ...


American Marine PINPOINT pH Probe
American Marine PINPOINT pH Probe
By American Marine
In Stock
$39.99
$37.25
You Save: 7%

mpn: F73 0445 0011, ean: 0019022445119,

PINPOINT pH Replacement Probe is designed especially with your purpose in mind. It features long, continuous duty expectancy, fast response and, most importantly, is non-toxic to your system. Each probe features a 10 foot cable with a high interferen...


Milwaukee MW600 LED Economy Portable Dissolved Oxygen Meter with 2 Point Manual Calibration, 0.0 - 19.0 mg/L, 0.1 mg/L Resolution, +/-1.5 percent Accuracy, 100 Percent Saturation Range
Milwaukee MW600 LED Economy Portable Dissolved Oxygen Meter with 2 Point Manual Calibration, 0.0 - 19.0 mg/L, 0.1 mg/L Resolution, +/-1.5 percent Accuracy, 100 Percent Saturation Range
By Milwaukee
In Stock
$166.00

mpn: MW600, ean: 5662252414827,

The Milwaukee MW600 is a portable dissolved oxygen (DO) meter for educational, aquaculture, water analysis, and environmental analysis applications, with an LCD screen and polarographic probe with 3m cable and screw-on cap membrane. The meter has two...


Digital pH Meter - Water Quality Tester, 0.01 High Accuracy and ATC, x6 calibration packs - pre calibrated pH meter for Water, Pool, Soil, Hydroponics, Aquarium, Beer Brewing, Wine, Food, Urine, lab
Digital pH Meter - Water Quality Tester, 0.01 High Accuracy and ATC, x6 calibration packs - pre calibrated pH meter for Water, Pool, Soil, Hydroponics, Aquarium, Beer Brewing, Wine, Food, Urine, lab
By Just Utile
In Stock
$24.95

mpn: FBA_ph-02, ean: 0643131917979,

Acidic or alkaline water hurts your health and your plumbing. It can hurt your aquarium or pond fish health, it affects the safety of your swimming pool water and the functionality of the pump, it can lead to deficiency and death of your plants or ru...


Sonkir pH Meter, Digital pH Tester/Water Quality Tester for Drinking Water, Swimming Pools, Aquariums, Hydroponics, ATC Function, 0.1 Accuracy, Backlit LCD Display (pH Meter)
Sonkir pH Meter, Digital pH Tester/Water Quality Tester for Drinking Water, Swimming Pools, Aquariums, Hydroponics, ATC Function, 0.1 Accuracy, Backlit LCD Display (pH Meter)
By Sonkir
In Stock
$14.99

mpn: SK-TSP, ean: 0767665663796,

Wide Applications It is widely applied to science laboratory, school education, commercial manufacture, industrial pollution controlling, agriculture etc . It is also suitable for testing pH values of household drinking water, RO system, hot tub, sw...


Micro Essential Lab 2210 Plastic Hydrion Vivid Short Range pH Test Paper Dispenser, 4.5-8.5 pH, Single Roll
Micro Essential Lab 2210 Plastic Hydrion Vivid Short Range pH Test Paper Dispenser, 4.5-8.5 pH, Single Roll
By Micro Essential Lab
In Stock
$10.79
$8.99
You Save: 17%

mpn: 0638F43EA,

Commonly used to test urine and saliva, this short-range Hydrion pH Paper is excellent for measuring pH solutions around neutral pH 7.00 and offers clear bright single color matches at every 0.5 interval from pH 4.5-8.5.The color chart has pH matches...


Analytical Test Indicator Strips to Detect Peroxide Up to 100 ppm (Vial of 100 Strips)
Analytical Test Indicator Strips to Detect Peroxide Up to 100 ppm (Vial of 100 Strips)
By Bartovation
In Stock
$17.64

mpn: PBARTLPER100, ean: 0643845994921,

Low Level Peroxide Test Strip up to 100ppm The Low Level Peroxide test strip detects residual peroxides, for example, in drinking water, pools, and hot tubs where Hydrogen peroxide was used as a disinfectant. This test strip is calibrated at 0, 1, 3...


UASure Uric Acid Test Strips, UA Sure, Pack of 25
UASure Uric Acid Test Strips, UA Sure, Pack of 25
By UASure
In Stock
$24.99

mpn: 4713648765168, ean: 4713648765168,

Test Strips are individually sealed to protect against light and moisture for maximum storage life. Each box of 25 individually wrapped strips comes with its own code chip, which fits in the back of the meter. The code chip is calibrated to each box ...


Antifreeze Refractometer Displaying in Fahrenheit for Checking Freezing Point of Automobile Antifreeze Systems and Battery Fluid Condition. Battery Acid, Glycol, Coolant, Antifreeze Tester
Antifreeze Refractometer Displaying in Fahrenheit for Checking Freezing Point of Automobile Antifreeze Systems and Battery Fluid Condition. Battery Acid, Glycol, Coolant, Antifreeze Tester
By Agriculture Solutions
In Stock
$21.99

mpn: WL0038-ATC, ean: 0698775002345,

Details: This refractometer is a portable, precision optical instrument used for measuring the freezing point of either Propylene or ethylene glycol based antifreeze systems. It can also be used for checking the strength of electrolyte solution batte...


RecoverPad 4.5X6 Large Butterfly TENS Unit Pads,2-Pack 3nd Gen Japanese Gel Latex-Free Replacement Electrode(FDA 510K Cleared) with Upgraded Self-Stick Performance,Skin Friendly and Non-Irritating
RecoverPad 4.5X6 Large Butterfly TENS Unit Pads,2-Pack 3nd Gen Japanese Gel Latex-Free Replacement Electrode(FDA 510K Cleared) with Upgraded Self-Stick Performance,Skin Friendly and Non-Irritating
By RecoverPad
In Stock
$18.99
$14.99
You Save: 21%

mpn: REPS4560-2, ean: 0798881077258,

Specifications: Brand:RecoverPad Glue Material:Japanese Sekisui Gel Item shape:Square Pad Long:4.5 inch Pad width:6 inch Life time:24-36 months Re-use time:25-35 times. RecoverPad Live Smart, Live Healthy,Make life Easier. RecoverPad TENS Electrode ...


Premium Electrodes 10 Packs of 4 Electrodes Each with Preferred Comfortable White Cloth with Covidien® Gel Adhesive for Multiple Application by Eco-Patch®
Premium Electrodes 10 Packs of 4 Electrodes Each with Preferred Comfortable White Cloth with Covidien® Gel Adhesive for Multiple Application by Eco-Patch®
By Eco-Patch®
In Stock
$29.75
$13.75
You Save: 54%

mpn: Eco-021, ean: 0185098000634,

Eco-Patch® White Cloth Backed Electrodes 2.0" x 2.0" square with black carbon conductor and US Made Covidien® Gel Adhesive for use with most stimulators and Massagers Designed for personal use. The US Made Gel Adhesive is well known to provide mult...




API POND MASTER TEST KIT Pond Water Test Kit 500-Test
API POND MASTER TEST KIT Pond Water Test Kit 500-Test
By API
In Stock
$35.79
$26.66
You Save: 26%

mpn: 164M, ean: 0317163131640,

The API POND MASTER TEST KIT Pond Water Test Kit provides everything you need for regular testing of your pond water or even tap water. This complete pond test kit measures the most important levels, including pH, ammonia, nitrite and phosphate to ma...


Specific Gravity Hydrometer Alcohol Tester - Pro Series American-Made Brewing ABV Testing: Beer, Wine, Cider, Mead Homebrew Fermented Beverages - Triple Scale Hydrometer by Brewing America
Specific Gravity Hydrometer Alcohol Tester - Pro Series American-Made Brewing ABV Testing: Beer, Wine, Cider, Mead Homebrew Fermented Beverages - Triple Scale Hydrometer by Brewing America
By Brewing America
In Stock
$14.99

mpn: BAHY03, ean: 0688951022410,

AMERICAN-MADE HYDROMETER! N.I.S.T. TRACEABLE (GUARANTEED ACCURACY AND QUALITY) Check out our full line of products with Prime shipping on Amazon!Our Triple Scale Brew Hydrometer is Easy to Read and Guaranteed to be Accurate! Brewing America's Tripl...


TDS Meter Digital Water Tester, Lxuemlu 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal TDS Test Kit for Drinking Water, Aquariums and More
TDS Meter Digital Water Tester, Lxuemlu 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal TDS Test Kit for Drinking Water, Aquariums and More
By Lxuemlu
In Stock
$28.99
$19.99
You Save: 31%

ean: 0665059127544,

water hardness test kit water quality monitor tds stick tds meter kit nutrient tester tds ph meter tds water filter TDS monitor ph teds meter☑️ TEST YOUR WATER: How Pure is Your Water? With the push of a button, the TDS water tester can tell you ...



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