(Fisher Color Comparator
, AF 650), Karl fisher (Karl Fischer KF-875), DDF tester (Bauroil tester DTL C) and Potentiometer titration (Metrohm SM Titrino-702).
Easy-to-use, color-matching tests are available, such as DPD reagents used with a color comparator; test strips; or the FAS-DPD titration method, which involves an obvious color change in the water sample and provides more precise results.
Choose a DPD test with a color comparator that allows you to determine total and free chlorine.
We were issued a Hobart Fat Tester; a Ringlemann Smoke Scope; pH and chlorine color comparator
test kits; two conductivity meters to validate high-temperature short-time pasteurization units; an assortment of thermometers, sample jars, bags, and sealing wax; and a high-intensity, plug-in UV lamp.
Of the providers using a nonwaived method, 59 used a color comparator
(e.g., BMS Hemoglobinometer[_] or American Optical Hb-Meter[TM]); 23, an automated hematology analyzer (e.g., a Coulter counter); and seven, other instruments.
Vision and laser equipment at the exposition included colori-meters and color comparators
as well as laser alignment systems and optical comparators.
Basic equipment for the treatment plant laboratory includes flasks, beakers, graduates, burettes, bottles, pipettes and other glassware, color comparators
with appropriate standards, laboratory balance, constant-temperature cabinet, and related apparatus.
By contrast, the color comparators
used with the standard DPD test generally allow readings at the low end of 0 and 0.5 ppm and at the high end of 5 or maybe 10 ppm.