FAQs and Help Topics

Viscometer Cleaning Information

The following information is courtesy of the Cannon Instrument Company (State College, Pennsylvania) catalog. Capillary Viscometers - How Do You Clean Them? Clean viscometers are essential if precise and accurate measurements are to be made. Because Cannon receives a...

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How often should I re-calibrate my instrument?

Consideration should be given to the frequency of use, the parameters of the application (temperatures at which it is used, the severity of the use) and the requirements of the regulatory agencies and/or the quality system you may be using. In general, for most...

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Using a partial immersion thermometer incorrectly immersed

Well, this is a new twist but maybe not as unusual as I had thought. A customer called us today with this question: he has an NIST traceable calibrated thermometer, calibrated for partial immersion (76mm). He is going to use it only immersed to 50mm. What kind of an...

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What does ‘NIST traceability’ mean?

  Everyone knows what "NIST traceability" is, right? Someone 'checked' your thermometer or hydrometer or other measuring device against another device which was "NIST traceable", so now your instrument is 'NIST traceable' also, right? Maybe. Maybe not. Firstly,...

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What is the “traceability chain”?

  Simply put, the number of “links” between the primary calibration (NIST) and the customer. The more “links’, or calibration transfers, the larger the measurement uncertainty. That cannot be avoided. Calibrate with ICL and minimize the links in the traceability...

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Helpful hints for hydrometer use

  Accuracy of hydrometer readings depend upon: 1. CLEANLINESS OF THE HYDROMETER, HYDROMETER JAR AND THE LIQUID IN WHICH THE READINGS ARE TAKEN For uniform and reproducible readings, the surface of the hydrometer and especially of the stem must be clean so that...

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ThermoProbe calibration intervals: API recommendations

The American Petroleum Institute's (API) publication 'Manual of Petroleum Measurement Standards' (Chapter 7, Section 3) 'Static Temperature Determination Using Portable Electronic Thermometers' (First Edition, July 1985) offers specific recommendations for...

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