Gelex 二級標準液如何使用？
How are Gelex secondary standards used?
• 2023/5/16
• Knowledge
• 2023/5/16
• Knowledge
Title
How are Gelex secondary standards used?
How are Gelex secondary standards used?
Summary used
Using Gelex secondary standards
Using Gelex secondary standards
Answer
Gelex standards are secondary standards in solid or gel form that require no dilution or mixing. They provide a quick and convenient way to check if the calibration of laboratory and portable turbidimeters has changed on a daily basis. To use, place the Gelex standard in the sample cell compartment in a defined orientation right after the turbidimeter has been calibrated with a primary standard, and record the displayed value. Then periodically (daily or weekly, for instance) place the standard back in the instrument in the same orientation to verify that the calibration has not changed significantly. When the value of the Gelex standard differs by more than 5% from the value right after the turbidimeter was last calibrated, the turbidimeter should be calibrated again with a primary formazin or Stablcal® standard. Both formazin and Stablcal® are accepted primary standards for turbidimeter calibration. Gelex standards should never be used to calibrate a turbidimeter, only to check the calibration after the turbidimeter has been calibrated with a primary standard. The Gelex standards will read differently at different temperatures so it is important to store and use them at room temperature for the most accurate results.
Gelex standards are secondary standards in solid or gel form that require no dilution or mixing. They provide a quick and convenient way to check if the calibration of laboratory and portable turbidimeters has changed on a daily basis. To use, place the Gelex standard in the sample cell compartment in a defined orientation right after the turbidimeter has been calibrated with a primary standard, and record the displayed value. Then periodically (daily or weekly, for instance) place the standard back in the instrument in the same orientation to verify that the calibration has not changed significantly. When the value of the Gelex standard differs by more than 5% from the value right after the turbidimeter was last calibrated, the turbidimeter should be calibrated again with a primary formazin or Stablcal® standard. Both formazin and Stablcal® are accepted primary standards for turbidimeter calibration. Gelex standards should never be used to calibrate a turbidimeter, only to check the calibration after the turbidimeter has been calibrated with a primary standard. The Gelex standards will read differently at different temperatures so it is important to store and use them at room temperature for the most accurate results.
Gelex 標準液是固體或凝膠形式的二級標準液，無需稀釋或混合。它們提供一種快速且方便的方法來檢查實驗室濁度計和手持式濁度計的校正是否每天變化。使用時，在以一級標準校正濁度儀後，立即將 Gelex 標準液依照規定的方向放入樣本池，並記錄顯示的數值。然後定期（例如每天或每週）將標準液以相同的方向放回儀器中，以驗證校正沒有明顯變化。當 Gelex 標準液的數值與濁度計上次校正後的數值相差 5% 以上時，應使用一級 Formazin 或 Stablcal® 標準液重新校正濁度計。Formazin和 Stablcal® 都是公認的濁度計校正的主要標準品。切勿使用 Gelex 標準液來校正濁度計，而只能在使用一級標準液校正濁度計後檢查校正情況。 Gelex 標準液在不同溫度下的讀數會有所不同，因此在室溫下儲存和使用它們以獲得最準確的結果非常重要。
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Article Number
000008571
Article Number
000008571
URL Name
KA-en-US-TE408-1000337
KA-en-US-TE408-1000337