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Jar Testing Procedure
Apparatus:
- 6 paddle gang stirrer
- 6 one liter beakers
Microsyringe*
- 25 microliter capacity for low dosages
- 50 microliter capacity for normal dosages
- 100 microliter capacity for highdosages
Raw Water sample
Rubber Discs or microscope slide covers
DelPAC samples
Procedure:
Measure exactly 1000 milliliters of raw water into each beaker.
Using the microsyringe premeasure each dosage onto the microscope slide cover or
rubber disc. Start the stirrer and carefully place the whole slide cover/disc into the beaker.
Make sure each cover/disc is completely below the surface.
For determining dosages use the following:
1 microliter (ul) of DelPAC into 1 liter of raw water is equal to 1 gallon per million
gallons of water. To calculate mg/l multiply the microliters x specific gravity.
Example: 10 ul of DelPAC 2020 (sp. Gr. = 1.24) added to 1 liter raw water
10 x 1.24 = 12.4 mg/L
Allow samples to mix at plants normal mixing times and speeds.
Notes:
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Only use microsyringes not micropipettes.
Experience has shown that the use of micropipettes may cause errors in actual dosage.
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Do not make dilutions of DelPAC 2020.
A dilution may not represent actual performance.
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Be sure to wash the microsyringe several times with deionized water immediately after each use.
Most important of all, contact a delta representative should any questions arise.
1-800-282-5322
*HAMILTON 50 microliter syringe Catalog #80900 Phone: 1-800-648-5950
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