This test method describes the enzyme-substrate-based detection of total coliforms and Escherichia coli in drinking water, surface water, and wastewater using the Colilert® test. This method is based on defined substrate technology, where specific enzymes produced by coliforms and E. coli react with added substrates to produce color and fluorescence, allowing for easy detection and… Continue reading Coliform / E.coli [Quanti-Tray (24 hr)]
This test method describes the standardized procedure for measuring the electrical conductivity of water and wastewater, which reflects the sample’s ability to conduct electrical current due to the presence of dissolved ionic species (such as salts, acids, and bases). Conductivity is a key indicator of total dissolved solids (TDS) and overall water quality.
This test method describes the enzyme-substrate-based detection of total coliforms and Escherichia coli in drinking water, surface water, and wastewater using the Colilert® test. This method is based on defined substrate technology, where specific enzymes produced by coliforms and E. coli react with added substrates to produce color and fluorescence, allowing for easy detection and… Continue reading Coliform / E.coli [Quanti-Tray (PW)]
This test method is a colorimetric spectrophotometric method used to determine free and total chlorine in water using a color reagent. In this method, chlorine reacts with color reagent, and the intensity of the color is measured with a spectrophotometer to quantify chlorine concentration.
This test method is a colorimetric spectrophotometric method used to determine free and total chlorine in water using a color reagent. In this method, chlorine reacts with color reagent, and the intensity of the color is measured with a spectrophotometer to quantify chlorine concentration.
This test method is a colorimetric spectrophotometric method used to determine free and total chlorine in water using a color reagent. In this method, chlorine reacts with color reagent, and the intensity of the color is measured with a spectrophotometer to quantify chlorine concentration.
This test method describes the enzyme-substrate-based detection of total coliforms and Escherichia coli in drinking water, surface water, and wastewater using the Colilert® test. This method is based on defined substrate technology, where specific enzymes produced by coliforms and E. coli react with added substrates to produce color and fluorescence, allowing for easy detection after… Continue reading Coliform / E.coli [P/A (24 hr)]
This test method is a procedure to determine Carbonaceous Biochemical Oxygen Demand (CBOD₅) over a 5-day incubation period. CBOD measures the amount of dissolved oxygen consumed by microorganisms specifically during the oxidation of carbonaceous (organic) material, excluding oxygen demand from nitrogenous compounds like ammonia. This method is commonly used for evaluating the organic pollution load… Continue reading CBOD
This test method is a colorimetric test used to determine Chemical Oxygen Demand (COD) in water and wastewater samples. COD measures the amount of oxygen required to chemically oxidize organic and inorganic matter in a sample, indicating the pollution or organic load. This method uses a dichromate digestion followed by spectrophotometric measurement.
The FDA’s Bacteriological Analytical Manual (BAM) method for Bacillus cereus outlines procedures for the detection and enumeration of this spore-forming, foodborne pathogen in foods, ingredients, and environmental samples. B. cereus is known to cause diarrheal and emetic (vomiting) illnesses and is commonly associated with starchy or protein-rich foods such as rice, dairy, and meat products.