How Can I Determine the Strength of Sodium Hypochlorite
For complete instructions on how to determine the strength of sodium hypochlorite,
refer to
"The Sodium Hypochlorite Strength Test — A Chemical Test Method to Determine
the Strength of Sodium Hypochlorite." This complete, detailed document
explains a test method that will provide accurate and repeatable results by the
producer and consumer to ensure the sodium hypochlorite is meeting the desired specification.
The analytical methods described in the application note require that certain glassware
and laboratory apparatus be available for use. The methods can be easily performed
using pipettes and volumetric glassware. The level of accuracy (and cost savings
on chemicals) is directly related to the measurement. For example, higher degrees
of accuracy will provide better quality control of the product and can potentially
reduce manufacturing costs of the product.
The following laboratory apparatus with their Fisher Scientific catalog numbers
are presented to help you equip your facility with the minimum laboratory glassware
and accessories needed to analyze your manufactured sodium hypochlorite.
|
Laboratory Apparatus
|
Fisher Catalog Number
|
|
Erlenmeyer flask (250 ml) 10-041A (pack of 6)
|
10-041A (pack of 6)
|
|
Volumetric Pipette
|
|
5 ml
|
13-650-2F (pack of 12)
|
|
10 ml
|
13-650-2L (pack of 12)
|
|
25 ml
|
13-650-2P (min of 6)
|
|
50 ml
|
13-650-2S (min of 6)
|
|
Pipette bulb
|
14-070-1 (pack of 3)
|
|
Liquid Dispensers (optional) 5-30 ml
|
13-706-18 (optional)
|
|
Weighing bottle
|
03-422F (pack of 6)
|
|
Volumetric flask (250 ml)
|
1-205D (min of 6)
|
|
Graduated cylinder (10 ml)
|
08-555A (min 3)
|
|
Graduated cylinder (50 ml)
|
08-555C (min 3)
|
|
Burette (50 ml)
|
03-700-12B (min 2)
|
|
Burette support
|
14-688 (min 1)
|
|
Magnetic stirrer
|
14-493-120S (min 1)
|
|
Magnetic stir bar
|
14-511-62 (min 10)
|
|
Analytical balance (0.001 g)
|
01-920-76 (min 1)
|
|
Reference weight (30 g)
|
01-920-76 (min 1)
|
|
Hydrometer
|
|
1.000-1.050
|
11-603-7A
|
|
1.050-1.100
|
11-603-7B
|
|
1.100-1.150
|
11-603-7C
|
|
1.150-1.200
|
11-603-7D
|
|
1.200-1.250
|
11-603-7E
|
|
1.250-1.300
|
11-603-7F
|
For complete instructions on how to determine the strength of sodium hypochlorite,
refer to:
Back to "FAQ About
Sodium Hypochlorite"