HACH 3007000 Manganese Chemkey Reagents User Manual

: June 1, 2024
: HACH

Table of Contents

HACH 3007000 Manganese Chemkey Reagents
Product Usage Instructions
Before starting
Test procedure
Accuracy check
Method performance
Consumables and replacement items
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HACH 3007000 Manganese Chemkey Reagents

Specifications :

Product : Manganese High Range Chemkey Reagents
Method : Periodate Method
Range: 0.1 to 25.0 mg/L as Mn
Application: For soluble manganese in drinking water

Product Usage Instructions

Test Preparation:
Before starting the test, ensure you have the Manganese High Range Chemkey Reagent.

Test Procedure:

Peel back the packaging to expose the Chemkey without touching it.
Insert the Chemkey quickly into a slot without touching it and remove the packaging.
Rinse the sample cup with the sample and fill it to the fill-line with the sample.
Place the meter into the sample cup and wait for the measurement completion.

Interferences:
Refer to Table 1 for non-interfering substances and their maximum tested levels.

Accuracy Check:
Use a standard solution method to validate the test procedure, reagents, and instrument. Follow the steps provided in the manual for preparing and comparing results with a standard solution.

Method Performance:

Standard: 10.0 mg/L Mn
Precision (95% confidence interval): 9.7 to 10.3 mg/L Mn
Sensitivity: Concentration change per 0.010 Abs change is 0.2 mg/L Mn

Summary of Method :
The manganese in the sample is oxidized to permanganate by sodium periodate, and the intensity of the purple color is proportional to the manganese concentration.

Consumables and Replacement Items:

Water, deionized – 4 L
Manganese Standard Solution, 1000 mg/L – 100 mL

FAQ :

Q: How often should I prepare the 10.0-mg/L manganese standard solution?
A: It is recommended to prepare the standard solution daily for accurate test results.

Manganese, HR
DOC316.53.01554

Periodate Method
0.1 to 25.0 mg/L as Mn
Scope and application: For soluble manganese in drinking water.

Test preparation

Before starting

Make sure that the sample is colorless and the turbidity value is less than 20 NTU.
Use a new Chemkey for each measurement.
Do not touch the Chemkey with hands.
Do not move the Chemkey after it is installed in the meter.
The display shows a progress bar with the time that remains until the measurement is completed. Different parameters have different reaction times.
The meter automatically identifies the type of Chemkey(s) that is installed.
Refer to the meter documentation for additional information.
The Chemkeys are articles and have no MSDS/SDS.
Dispose of reacted solutions according to local, state and federal regulations. Refer to the environmental, health and safety staff for your facility and/or local regulatory agencies for further disposal information.

Items to collect

Description: Manganese High Range Chemkey Reagents
Quantity: 1

Refer to Consumables and replacement items on page 3 for order information.

Test procedure

$HACH-3007000-Manganese-Chemkey-Reagents- $1$$

Peel back the packaging to show the end of the Chemkey. Do not touch the Chemkey with hands.
Put the Chemkey quickly in one movement into any slot. Carefully remove the packaging from the Chemkey.
Rinse the sample cup with the sample.
Fill the sample cup to the fill-line with sample. $HACH-3007000-Manganese-Chemkey-Reagents- $2$$
Put the meter into the sample cup.
Wait for the sound alert and/or the meter removal animation (within 1 to 2 seconds), then immediately remove the meter from the sample cup.
Put the meter back into the case. Wait for the measurement to complete.

Interferences

The substances that are shown in Table 1 do not interfere in the manganese determination at or below the given concentration.
Table 1 Non-interfering substances

Substance| Maximum Level Tested| Substance| Maximum Level Tested
---|---|---|---
Alkalinity (as CaCO3)| 1000 mg/L| Magnesium (as CaCO3)| 250 mg/L
Aluminum (Al3+)| 0.5 mg/L| Monochloramine (as Cl2)| 5.0 mg/L
Calcium (as CaCO3)| 1000 mg/L|

Nitrate (NO3––N)

| 50 mg/L
Chloride (Cl–)| 1200 mg/L|

Phosphate (as PO43–)

Accuracy check

Standard solution method

Use the standard solution method to validate the test procedure, the reagents and the instrument.
Items to collect:

1000 mg/L manganese standard solution
1-L volumetric flask, Class A
10-mL volumetric pipet, Class A and pipet filler safety bulb
Deionized water
1. Prepare a 10.0-mg/L manganese standard solution as follows:
  Use a pipet to add 10.00 mL of 1000-mg/L manganese standard solution into the volumetric flask.
  Dilute to the mark with deionized water. Mix well. Prepare this solution daily.
2. Use the test procedure to measure the concentration of the prepared standard solution.
3. Compare the expected result to the actual result.
  Note: The factory calibration can be adjusted slightly with the standard adjust option so that the instrument shows the expected value of the standard solution. The adjusted calibration is then used for all test results. This adjustment can increase the test accuracy when there are small variations in the reagents or instruments.

Method performance

The method performance data that follows was derived from laboratory tests during ideal test conditions. Users can get different results under different test conditions.

Standard| Precision (95% confidence interval)| Sensitivity
Concentration change per 0.010 Abs change
---|---|---
10.0 mg/L Mn| 9.7 to 10.3 mg/L Mn| 0.2 mg/L Mn

Summary of method
The manganese in the sample is oxidized to permanganate by sodium periodate after the sample is buffered. The intensity of the purple color is proportional to the manganese concentration.