Low dissolved oxygen levels in surface water systems usually indicate serious pollution. Adequate amounts are crucial for fish life, but conversely, DO must be excluded from boiler feed water to prevent corrosion. This test kit utilizes drop count titration and contains 100 tests.
Here is a very nice used lot of misc lab glass items. lot has- 2 each 1000ml beakers 2 each 600ml beakers 2 each 400ml beakers 2 each 250ml beakers 2 each 4" cover glass 2 each glass stirring rods 2 each 8" long filter funnel 2 each measuring cylinders 100ml
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