To Order a Field Bleach Vacuum Test Kit, contact a Powell Sales Representative.
Procedure
Procedure Note: All apparatus should be kept clean and dust free
1. Assemble filter. Use forceps to place one filter on plastic support base. Put filter funnel and clamp in place.
2. Shake sample bottle. Fill graduated cylinder or beaker to the 1000 ml mark with solution.
3. Start Vacuum.
4. Slowly pour the 1000 ml into the top of the vacuum holder. When sample has filtered through completely, record the time to filter.
Note: Bleach that has not been filtered with submicron filtration will take approximately 6 to 8 times longer than filtered product. Typically 1000 ml of high clarity bleach will take less than three minutes at 20" Hg vacuum.After filtration, the filter paper should be near white with virtually no retained particles. discolored filter paper typically indicates the presences of iron.
Five Samples of Bleach Were Tested
| Sample Number |
Bleach Strength |
Filter Time |
1 |
Household Bleach 6% |
0 min. 55.88 seconds |
2 |
Household Bleach 5.25% |
1 min 14.15 seconds |
3 |
Household Bleach 5.25% |
2 min 44.07 seconds |
4 |
Household Bleach |
7 min. 48.00 seconds |
5 |
Pool Bleach 12.5% |
The test was stopped after 60 minutes of filtering. At 60 minutes, approximately 1/2 liter had passed through the filter. |
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