Nitrite Test Kit

Chemicals Direct’s nitrite test kit uses ceric sulfate as sodium nitrate indicator. It is a yellow to yellow-orange compound that can either be in anhydrous salt or hydrated form. Ceric sulfate is miscible in water and acids. It forms elemental chlorine slowly if added to dilute hydrochloric acid. However, it reacts faster with stronger reducing agents.

Ceric sulfate is a strong oxidizer, especially in acidic conditions. Its neutral solution slowly decomposes and deposits the light yellow oxide CeO2. When its tetrahydrate form is heated to 180-200°C, it will lose its water content. In  analytical chemistry, ceric sulfate is used for redox titration, often with a redox indicator.

Properties:

CAS: 13590-82-4
Molecular formula: Ce(SO4)2
Molar mass: 332.24 g/mol (anhydrous); 404.304 g/mol (tetrahydrate)
Density: 3.91 g/cm3 (tetrahydrate)
Melting point: 350°C (decomposition)
Boiling point: NA
Crystal structure: orthorhombic

Safety:

Handling: Avoid breathing its particles, vapor, or mist. Avoid skin and eye contact as well. Do not place near flammable sources. Vacuum or sweep small spills and dispose properly.

Storage: Store in a tightly closed container and in a cool, dry place.
Incompatible sources: reducing agents, strong oxidizing agents

Nitrate test kit includes:

1- #R8433Q-50 NT-2NA ceric sulfate titrating solution
1- #129-50 nitrite indicator
1- #407 test vial, glass w/cap, and a 5-cc syringe
1- #84040 plastic test kit box with foam insert

References:

http://en.wikipedia.org/wiki/Ceric_sulfate

http://ull.chemistry.uakron.edu/erd/Chemicals/8000/6251.html

Boiler Water Test Kits

All industries, particularly power plants, technical institutions, chemical corporations, and food and beverage companies should routinely check their boiler and cooling water systems to avoid corrosion and malfunction. This is to ensure smooth and continuous business operations.

Water test kits are developed to aid experts like scientists, facilities managers, engineers, environmental health specialists, and water treatment professionals to perform a range of water quality analysis procedures quickly and accurately. Testing can be done by the company’s laboratory,  subcontractors, or other third party providers. There are different kinds of water kits that perform specific tests like replacement reagents, drop test utilization, bacteria and fungi testers, comparator reagents, hardness indicators, and electronic meters.

To maximize time and energy however, there is a water tester that does most of the tests. It contains:

• Alkalinity indicator, P&T; 1 drop = 10 ppm as CaCO3/25 ml
• Hardness indicator, total & calcium; 1 drop = 2 or 10 ppm as CaCO3/25 ml
• Orthophosphate = 30 or 60 ppm as PO4
• Sulfite; 1 drop = 2 or 10 ppm as Na2SO3/25 ml
• Oakton pH tester 30 range – 1.0 to 15.0 pH resolution; 0.01 pH Oakton
• C Tester 11 dual range 0 to 2,000 μS; 0 to 20 mS

Reference: http://www.inspectapedia.com/water/watrtest.htm

Dowfrost

Dowfrost is a propylene glycol-based heat transfer fluid that contains specially formulated food grade industrial inhibitors to help prevent corrosion. Because propylene glycol has low toxicity, it is often used in applications where food and beverage contact can occur like immersion freezing, packaging carbonated beverages, and fermentation cooling.

Recommended temperature range is from -45°C (-50°F) to 120°C (250°F. Product is colorless and is composed of 96 percent propylene glycol and 4 percent performance additives. It has a specific gravity of 1.050-1.060 in 15/15°C (60/60°F). Dowfrost’s pH is 9.0-10.0 and its reserve alkalinity is 10
ml. (minimum). Product is available in 1, 2, 4, 5, 15, 30, and 55 gallons but custom blends can also be purchased in any size.

Dowfrost HD heat transfer fluid also serves as an industrial corrosion inhibitor with a formulation of 94 percent propylene glycol. The fluid is dyed fluorescent yellow to aid in leak detection. Solutions in water provide freeze protection to below -50°C (-60°F) and burst protection to below -73°C (-100°F).

Recommended use temperature range is from -45°C (-50°F) to 160°C (325°F). Suitable applications include: single fluid process and cooling, closed loop, water-based HVAC applications where propylene glycol solutions are preferred or required. (Note: Dowfrost HD is not approved for food use by the USDA and FDA, nor is suitable for food or beverage application.) Product is available in 1, 5, and 55 gallons.

Reference: http://www.dow.com/heattrans/prod/glycol/dowfrost.htm