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Alkalinity test kit, model AL-AP
SKU: 2444301
Manufacturer: Hach
Availability: Order only
The set includes:
- measuring tube
- mixing bottle
- reagents (see Accessories tab)
- instructions
- case for carrying and storage
Description Specifications Recommended products Accessories
Description
Description
Recommendations for an alkalinity test
- Hold the pipette vertically over the sample. Do not let it touch the vial during titration.
- Rinse tubes and vials with sample prior to testing. After the test, rinse the tubes and bottles with deionized water.
- Alkalinity is the ability of water to neutralize acids. Carbonates, bicarbonates and hydroxides are the main sources of water alkalinity. High total alkalinity makes the water more resistant to pH changes.
- To check the accuracy of the test, use a standard solution as a sample.
Step by step determination of alkalinity (0 - 400 mg/L CaCO3)
- Fill the volumetric tube with sample.
- Transfer the sample to a mixing bottle.
- Add one sachet of indicator reagent (94299). Rotate to mix. If the solution is colorless, the phenolphthalein (P) alkalinity is zero. Go to step 6.
- Add 0.035 N. standard sulfuric acid solution (2349732). Stir after each drop. Count the drops until the color changes from pink to colorless.
- Multiply the number of drops by 20 to get the phenolphthalein alkalinity as mg/L CaCO3.
- Add one sachet of powder reagent (94399). Rotate to mix.
- Add 0.035 N. standard sulfuric acid solution. Stir after each drop. Count the drops until the color changes from green to pink.
- Calculate the total number of drops from step 4 and step 7.
- Multiply the total number of drops by 20 to get the total alkalinity (methyl orange / m-alkalinity) as CaCO3.
Step by step determination of alkalinity (0 - 100 mg / l CaCO3)
- Fill the mixing container with sample up to the 23 ml mark.
- Add one sachet of phenolphthalein indicator (94299). Rotate to mix. If the solution is colorless, the phenolphthalein alkalinity (P-alkalinity) is zero. Go to step 5.
- Add 0.035 N. standard sulfuric acid solution (2349732). Stir after each drop. Count the drops until the color changes from pink to colorless.
- Multiply the number of drops by 5 to get the phenolphthalein alkalinity as CaCO3.
- Add one sachet of powder reagent (94399). Rotate to mix.
- Add 0.035 N. standard sulfuric acid solution. Stir after each drop. Count the drops until the color changes from green to pink.
- Calculate the total number of drops from step 3 and step 6.
- Multiply the total number of drops by 5 to get the total alkalinity (methyl orange / m-alkalinity) in mg/L CaCO3.
Specifications
| Application area | Test kits, Wastewater, Drinking water, Treatment facilities, Process control |
| Industry | Power generation, Chemical, Food and Beverage, Municipal |
| Parameters | Alkalinity |
| Measurement Range | 5 - 100 mg/L CaCO3 |
| Measurement method | drop count titration |
| Method | Sulfuric acid |
| Number of tests | 100 |
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