Test kit, alkalinity, model AL-DT

Description

Test kit, AL-DT (2063700) from Hach. Suitable for use with Hach digital titrators.

Range: 10 - 4,000 CaCO3 mg / L.

The kit contains all the reagents you need in a robust portable case for field analysis.

The test kit includes:

• Digital Titrator
• flask
• graduated cylinder
• four reagents
• instruction manual
• carrying case

Analysis procedure:

1. Select the sample volume and sulfuric acid (H2SO4) titration cartridge that matches the expected alkalinity concentration as mg / L calcium carbonate (CaCO3).
2. Insert a clean delivery tube into the titration cartridge. Attach the cartridge to the titrator body.
3. Turn the dispensing knob to inject a few drops of titrant. Reset the counter to zero and wipe the tip.
4. Use a graduated cylinder or pipette to measure the sample volume. Transfer the sample to a clean 250 ml Erlenmeyer flask. Dilute to the 100 ml mark with deionized water if necessary.
5. Add the contents of one Phenolphthalein Indicator Powder Pillow and swirl to mix
If the solution turns pink, titrate to a colorless end point. Place the delivery tube tip into the solution and swirl the flask while titrating with sulfuric acid.
Record the number of digits required.
Calculate: Digits Required x Digit Multiplier = mg/L CaCO3 P Alkalinity
6. Add the contents of one Bromcresol Green-Methyl Red Indicator Powder Pillow to the flask and swirl to mix.
7. Continue the titration with sulfuric acid to a light greenish blue-gray (pH 5.1), a
light violet-gray (pH 4.8), or a light pink (pH 4.5) color, as required
by the sample composition
Calculate: Total Digits Required x Digit Multiplier = mg/L as CaCO3 Total (T or M) Alkalinity