Why sample properties affect stabilization in Hach ISENH4181 Laboratory Equipment?
Sample properties can cause slow stabilization or inaccurate measurements in Hach Laboratory Equipment. Ensure the sample pH after adding ISA is less than 8.5, and use one ISA pillow per 25 mL of sample. Also, increase the sample temperature or keep the temperature consistent (within 2 °C (3.6 °F)) across different samples.
What to do if the procedure causes slow stabilization in Hach ISENH4181 Laboratory Equipment?
If you're experiencing slow stabilization during procedures with your Hach Laboratory Equipment, consider these points: ensure air bubbles are removed by tapping or shaking the probe, verify that ISA is added (one powder pillow to each 25 mL of sample/standard), adjust the stir speed, insulate the beaker from the stirrer to prevent temperature increase, use a specified standard solution of good quality, and measure samples immediately after adding ISA.
How to improve probe performance for Hach ISENH4181 Laboratory Equipment?
To improve probe performance with Hach Laboratory Equipment, take these steps: rinse and condition the probe to remove contamination on the sensing element; fully rinse the reference junction with deionized water and shake the probe to remove air bubbles if the reference junction is clogged; and ensure the probe is sufficiently conditioned to the sample.
General| Brand | Hach |
|---|---|
| Model | ISENH4181 |
| Category | Laboratory Equipment |
| Language | English |
Defines the intended application and users for the Intellical probes in laboratory water quality measurements.
Explains the meaning of hazard symbols (DANGER, WARNING, CAUTION, NOTICE) used in the manual for safety communication.
Provides essential tips before performing calibration, including sample handling, temperature, and stirring.
Step-by-step instructions with illustrations for calibrating the probe using standard solutions and ISA.
Key considerations before measuring samples, including probe rinsing, temperature, and data saving.
Illustrated guide for taking sample measurements, including ISA addition, stirring, and reading stabilization.
Guidelines for accurate measurements at low ammonium concentrations, including conditioning and ISA use.
Details ions that interfere with ammonium measurements and explains the effect of ISA on interferences.
Steps to verify the probe's calibration using a standard solution and comparing the measured value to the expected value.
Instructions for cleaning the probe to remove buildup and maintain optimal performance, including symptoms of contamination.
Guidelines for storing the probe correctly to prevent damage to the sensing element.
Procedure to check the probe's slope using two standard solutions to ensure correct performance.
Method to verify sample measurement accuracy by adding a standard solution and calculating percent recovery.
Lists optional accessories available for use with the Intellical probes.
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