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  3. Single Method 56I700380 - Zinc (Total Complexed)

Lovibond Single Method 56I700380 - Zinc (Total Complexed) User manual

  • Hello! I've reviewed the provided datasheet for the Lovibond Zinc Test Kit 56I700380. This kit is designed for measuring complexed zinc in water, particularly in cooling and boiler systems. The test uses a colorimetric titration method with reagents like Zinc Indicator Z4P, Zinc Titrant Z5, and Zinc Buffer Z1B. I understand the procedures, necessary equipment, and the key features of the test. Feel free to ask any questions you have about this product.
  • What is measured by this test kit?
    What type of water can be tested?
    What should be done if suspended zinc is observed in the sample?
Zinc (Total Complexed) / 56I700380
ENMethod Reference Book1.02
Zinc (Total Complexed) 56I700380
0.1 - 5 mg/L Zn
Material
Reagents Packaging Unit Part Number
Zinc Indicator Z4P Powder / 20 g 56P024420
Zinc Titrant Z5 65 mL 56L019465
Zinc Buffer Z1B 65 mL 56L024365
The following accessories are required.
Accessories Packaging Unit Part Number
Syringe, plastic, 20 mL 1 pc. 56A006501
Titration jar with cap, plastic, 60 mL 1 pc. 56A006701
Filter Circle 0.45 µm, 25 mm 1 pc. 56A020050
Filter Holder 25 mm 1 pc. 56A009101
Application List
• Cooling Water
• Boiler Water
Notes
1. Colours may vary depending on sample and test conditions.
2. If the sample is observed to have suspended zinc in the water, pass the sample
through a 0.45 μm membrane filter to remove any suspended zinc.
3. Strongly complexed zinc will not be measured. Therefore this test is not suitable for
use with Zinc/EDTA programms.
4. QAC’s can interfere with this test.
Zinc (Total Complexed) / 56I700380
ENMethod Reference Book1.0 3
Sampling
Select the sample volume from the table according to the expected measuring range
and read off the factor to calculate the result.
Expected Range Titrant used Sample Size Factor
0.1-1.0 mg/L Zinc Titrant Z5 50 mL 0.1
1.0-2.0 mg/L Zinc Titrant Z5 40 mL 0.125
2.0-3.0 mg/L Zinc Titrant Z5 20 mL 0.25
3.0-5.0 mg/L Zinc Titrant Z5 10 mL 0.5
Zinc (Total Complexed) / 56I700380
ENMethod Reference Book1.04
Determination of soluble zinc
10
Attention!Select the
appropriate sample
volume according to the
instructions in the chapter
Sampling.
Add 10 drops Zinc Buffer
Z1B.
Swirl to mix.
9
4
5
6
7
8
10
11 12
1
2
3
10 sec 2
Wait for 10 second(s)
reaction time.
Add 2 measuring
scoop(s) Zinc Indicator
Z4P .
Swirl to mix.
The sample will turn purple
.
Attention! Record the
number of drops that will be
added.
Note: Make sure to swirl
the jar after adding each
drop!
Add Zinc Titrant Z5 drop
by drop to the sample until
colouration turns from purple
to pale orange.
Calculate test result: Zinc (as Zinc) mg/L = Number of drops Zinc Titrant Z5 x
factor (see table)
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