Water Quality Test Kits Products (279)

Control of chlorine and pH in pools and spas to maintain safe bathing conditions and to protect against system corrosion. Supplied with color discs and comparator for monitoring chlorine and pH, the Free & Total Chlorine and pH Test Kit provides more accuracy than test kits using color cubes....

The level of dissolved oxygen in natural waters is often a direct indication of quality, since aquatic plants produce oxygen, while microorganisms generally consume it as they feed on pollutants. At low temperatures the solubility of oxygen is increased; during summer, saturation levels can be as...

Most natural waters range from pH 4 to pH 9 but commonly are above pH 7 because of carbonates and bicarbonates (alkalinity). The pH of water used in industry, boiler feed water and swimming pools is usually kept within a narrow range.

For measuring water turbidity (cloudiness) according to either EPA or ISO Standards Easy Calibration and Operation Auto Ranging from 0-1100 NTU Simple 5 key operation Signal Averaging for stable and accurate readings Long Battery and Bulb Life Portable for use either in the lab or field Choose TB...

Because of its strong oxidizing properties, chlorine is an excellent biocide used to treat potable waters, municipal wastes, and swimming pools. When used to treat potable water, chlorine helps alleviate the adverse effects of iron, manganese, ammonia, and sulfide. The Maximum Residual Disinfectant...

For determination of Ammonia Nitrogen by the Salicylate Method, using TNTplus vials. Hach Method 10205. High Range: 2 - 47 mg/L NH3-N. ?25 tests/package. Reduce Errors with Bar-coded Vials No Reagent Blank Necessary Innovative Vial and Reagent Delivery Helpful package design

Most Widely used DPD Chlorine Tablets for Determining Free and Combined Chlorine DPD chlorine tablets employ DPD indicator (diethyl-p- phenylenediamine) to distinguish levels of free, combined, and total chlorine in a simple test sample. DPD chlorine tablets designated “Instrument Grade”...

Protects water baths and other water systems against the growth of algae, bacteria, molds and biofilms. Just 2ml per liter of water adds a blue tint which will fade after about 3 months reminding you to change the water and add new conditioner. Protects pumps and thermostats and helps prevent tubing...

Water hardness is caused almost entirely by calcium and magnesium ions. Other di- and trizalent metals have a similar effect, but usually are not present in high enough concentration in potable waters to cause problems. Hardness increases soap consumption in laundries and causes scale in boilers....

For determination of reactive (ortho) phosphate (phosphorus) by the PhosVer® 3 ascorbic acid method.  USEPA accepted for reporting for wastewater analysis using Hach Method 8048, Phosphorus, Reactive.  Also used in acid-hydrolyzable and total phosphorus determination, after appropriate...

Direct Reading Titrator (9860J75 and J76) For determining dissolved oxygen in natural and treated waters Employs azide modification of Winkler method Range from 0 to 10 ppm with 0.2 ppm sensitivity Sufficient for 50 tests at 10 ppm Ideal for daily monitoring or D.O. meter checkups and backup. EPA...

Direct Reading Titrator (9859X42 and X43) For determining total hardness of water Range 0 to 200 ppm as CaCO₃ in 4 ppm increments Titrators may be refilled to test higher concentrations Sufficient for 50 tests at 200 ppm Direct Reading Titrator (9859X72 and X73) For determining calcium,...

For determining available chlorine in chlorine bleach or hypochlorite solutions Range: 1 drop = 0.005%, 0.05% or 0.5% Cl Sufficient for 50 tests at 0.1, 1.0 or 10%

For determination of Total Nitrogen by the Persulfate Digestion Test 'N Tube method:  Hach Method 10072. Range: 10 - 150 mg/L N. 25-50 tests (dependent upon the number of reagent blank tests performed) Test 'N Tube products provide safe, convenient testing Easy ordering Perform...

The ColorQ Pool 4 measures four basic pool and spa tests, Free Chlorine (0 to 10 ppm); Total Chlorine (0 to 10 ppm); Bromine (0 to 22 ppm) and pH (6.5 to 8.5 pH). As a bonus, the ColorQ Pool 4 can also measure Total Alkalinity (Code 7038-G), Calcium Hardness (Code 7041-G and 7042-G), and Cyanuric...

Low Cost, Easy to use kits for testing a wide range of water quality Parameters Continuous gradient color disks provide accurate measurements—no need to “extrapolate” between discrete color blocks Rotate the color wheel to obtain a color match with the reacted sample and read your result in the...