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 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…

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…

Chloride is the most common inorganic anion found in water and wastewater. The Maximum Secondary Contaminant Level for drinking water for chloride is 250 mg/L. Natural sources of salt are the ocean and various salt deposits above and below ground. Chloride is very corrosive to most metals in…

Ethylene glycol and propylene glycol are the primary ingredients in commercially-available antifreezes. They are used with various corrosion inhibitors to protect metal surfaces in cooling water systems. CHEMetrics glycol kits are used to monitor potable waters for glycol contamination…

Chloride is found in nearly all natural waters and affects human taste above 250 mg/L. High levels inhibit plant growth, and many industrial processes need to limit chloride concentration. Contains 40 tests. Easy to use, disposable, and inexpensive A great way to obtain quick,…

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. …

UN Number: UN3316

Direct Reading Titrator For determining levels of sodium in natural and treated waters Range 0 to 500 ppm sodium in 10 ppm increments Test requires three titrations: one to determine bicarbonate and carbonate ions; one to determine sulfate and chloride ions; and one to determine calcium and…

Yes/No qualitative test Sensitivity less than 2.2 per 100 mL of sample No incubation equipment required; only room temperature

All necessary reagents for the analysis are contained in the cells Considerate packaging design protects the cells from fluctuation even in unfavorable environment Elimination of possible mistakes through barcode-system

Because sulfite readily oxidizes to sulfate, it normally is not present in natural waters. It is used in paper mills for bleaching pulp and in boiler water as an oxygen scavenger. Hach products are intended for sale/shipment within the US only. International customers should contact their…

Test tap water from any source and study the impact of urban water on the city’s environment. "Wet in the City," a hands-on kit, introduces the basic concepts of water chemistry–even to kids as young as third grade! Non-hazardous TesTabs® make "Wet in the City" an…

Carbohydrazide is added to boiler system water as an oxygen scavenger to control corrosion. It is a safer alternative to hydrazine, which is toxic. Carbohydrazide reacts with oxygen at low temperatures and pressures. The products of the reaction are volatile and do not contribute dissolved solids…

Applications: Laundry and Sanitation This kit tests for caustic levels by adding drops of Barium Chloride solution to a sample where white precipitate will form if carbonates are present. Levels are then determined using the Phenolphthalein Indicator. Range and sensitivity is 1 drop = 0.1 or…

Proper maintenance and optimization of boilers and cooling towers require a careful balance between water quality parameters and treatment chemicals. This kit provides testing capability for sulfite, phosphate (0-40 mg/L), and pH (7.4-9.6), offering an economical means of monitoring common…

3114 Mid-Range Octet Comparator For determining orthophosphates in water Employs ascorbic acid reduction method Octet Comparator has color standards representing 0.5, 1, 2, 3, 4, 6, 8 and 10 ppm phosphate Sufficient for 50 tests

Octa-Slide Comparator Tests total iron after any ferric iron is reduced to ferrous in the sample Sufficient for 90 tests Ferrous and ferric iron may be tested separately by eliminating the reduction step. Octa-Slide has color standards representing 0.5, 1.0, 2.0, 3.0, 4.0, 6.0, 8.0…

This kit tests for nitrate nitrogen using the LRC Comparator. Range/sensitivity is 0, 0.2, 0.4, 0.6, 0.8, 1.0 ppm NO₃--N. Applications: Food and Beverage, Environmental Education, Industrial Water Boiling and Cooling, Laundry and Sanitation, Water and Wastewater

Octet Comparator Method For determining aluminum in water Sufficient for 50 tests Octet Comparator has color standards representing 0, 0.1, 0.15, 0.2, 0.25, 0.3, 0.4 and 0.5 ppm. A pink to red color will form when aluminum reacts with Eriochrome Cyanine R, at pH 6.

Phosphorus occurs in natural waters as one of the forms of phosphates: ortho- or reactive phosphate, meta- or poly- (condensed) phosphate, and organic phosphate. Phosphates enter water supplies from soil runoff, cleaning operations, water treatment, boiler blowdown, and sewage. Although…

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…

UN Number: UN3316

Method: colorimetric with test strips 0.5 - 1 - 2 - 3 mg/g KOH MQuant™ Storage class: 10 - 13 Other liquids and solids Storage: Store at +15°C to +25°C. Deep-frying causes oils and fats to decompose over time. One of the major by-products of decomposition is free…

3322 Octa-Slide Comparator System For determining total sulfide Sufficient for 50 tests NPDES-EPA accepted Unit uses the Pomeroy methylene blue method for analysis. Total sulfide is determined using a color dye, which is added to an un-reacted sample until it matches a reacted…

Using the simple color disc method, this kit measures Iron (medium range: 0.1 - 4 mg/L) and contains reagent for 100 tests. Includes one reagent, two color discs, comparator box, two viewing tubes, instructions and carrying case Simple, low-cost color disc method is the most accurate…

Resulting from the anaerobic decomposition of organic matter, hydrogen sulfide is present in many water supplies. Sewage and industrial wastes are other sources of sulfide pollution. Highly toxic, this compound has a characteristic rotten egg odor, which can be detected long before harmful…

The waterproof, Bluetooth ® ColorQ ® 2x PRO 7-PLUS Kit handheld professional pool photometer directly measures the seven primary tests of Free Chlorine (DPD), Total Chlorine (DPD), Bromine (DPD), pH, Alkalinity, Calcium Hardness, and Cyanuric Acid directly on a digital display. The…

Detergents can be introduced into the water supply by industry, soap manufacturers, and private households. Environmental analysts often include a determination of anionic detergents when assessing surface water pollution. The Methylene Blue Method References: USEPA Methods for…

UN Number: UN3316