Water and Wastewater Testing Supplies
Electron Microscopy Sciences TEM Checker™ EDS Resolution Monitor
TEM analysts also need to monitor the performance of their x-ray detectors. The TEM Checker contains 5 manganese disks in a standard grid storage box. Each disk is 3 mm in diameter and fits into the sample holder. The discs are not transparent to the beam but will give you a strong manganese peak to check the resolution of your EDS detector.
Aqua Solutions Chloride Std. 50.0 ppm w/w in Toluene (100ML)
Chloride Std. 50.0 ppm w/w in Toluene (100ML)
Electron Microscopy Sciences NBS 5 Bar Test Ref 1963A BS 4657
This consists of elements of 5 bars ranging from 1 line per mm to 18 lines per mm, with adjacent numbers indicating the number of lines per mm. Produced as a vacuum deposited chrome image on B270 75 mm x 75 mm glass.
Hach Company Sodium Thiosulfate Digital Titrator Cartridge, 0.113 N
For chlorine determination by iodometric Digital Titrator titration. 0.113 N, Digits x 0.1 = mg/L CI2 in a 5 mL sample, Digits x 0.000141 = meq. Approximately 40-100 tests
MOLTOX Molecular Toxicology Inc mEndo Les Agar, 50 mm Plate, 8 mL/plate, 10 plates/sleeve, Store in Refrigerator
m Endo Agar, LES is used for enumerating coliforms in water by membrane filtration technique. Each lot of media from MOLTOX is tested for sterility, where applicable, and its ability to support the growth of the appropriate microorganism. All media are accompanied by GLP-compliant formulation and Quality Control certificate.
Hach Company Sulfide Reagent Set, Methylene Blue
For determination of Sulfide by the Methylene Blue Method, using Hach Method 8131 and visual test kits. Photometric range: 5 - 800 μg/L sulfide. Test kit ranges: 0.01 - 0.55 to 2.5 - 11.25 mg/L sulfide. Set contains 2 100-mL bottles each of Sulfide 1 and Sulfide 2 Reagents. Approximately 100 tests. For turbid samples, also order Bromine Water (221120) and Phenol Solution (211220).
Hach Company Glycine p-Toluenesulfonic Acid, 25 g
(Glycine PTSA) Protein-TKN standard: 5.665% N, 35.40% crude protein. For checking accuracy and digestion recovery in Total Nitrogen and TKN determinations. 25 g bottle. See 2277800 for the complete set of three standards with increasing resistance to digestion.
Hach Company Presence-Absence (P-A) Broth, Dehydrated 500 g
Used to detect pollution in treated or potable water; described in the 16th ed., Standard Methods.
Hach Company Sulfuric Acid Digital Titrator Cartridge, 1.600 N
For determination of alkalinity by Digital Titrator titration. Hach method 8203. 1.600 N Sulfuric Acid. Digits = mg/L CaCO3 in 100 mL, Digits x 0.002 = meq. Approximately 40-100 tests.