Page 45 - FoodFocusThailand No.174 September 2020

STRONG QC & QA

The varieties of instrument are • A water container, Evaporation Trap
normally used in every industry. They • De-ionized water
It is the reference by ISO 8655 standard of inspection for the Piston Pipette, and ASTM
involve in a product development, E542 for volumetric glassware.
a production process, a quality In addition, the inspector will use an accurate weighing scale as a standard tool. When
1
inspection, and so on. The tools it is connected to the software system , it allows operators to work more accurately every
time. Also, they do not bother to record the weigh, or calculate the result. In case the test
and instrument are designated report of immediate check is required, it can be easily done as well.
for a routine check as operator’s It is just a simple operating procedure according to an instrument standard in laboratory.
guideline. The upkeep frequency By applying this, your laboratory volumetric instruments will be more reliable, and meet all
international requirements.
is therefore relied on a schedule
planned by the administrator.
ข้้อมูลเพิ่ิ�มเติิม/Additional Information
1 ระบบซอฟต์์แวร์ LabX จากเมทเล่่อร์-โทเล่โด
One of the respectable methods of tool
maintenance is the instrument calibration LabX software from Mettler-Toledo
ศิิมนััส นัิกููลกูาญจนั์ provided by the reliable calibrating providers
Simanas Nikoolkarn who are certified by international agencies.
Sales Team Leader Tools and devices in production process
Mettler-Toledo (Thailand) Ltd. especially for measuring quantitative values
MT-TH.CustomerSupport@mt.com such as volume, weight, and distance normally
have a yearly calibration plan. The process is
to ensure the accuracy and precision within the
default range. Once the instrument is calibrated
or getting a verification, one question may arise.
How can we ensure that this instrument
maintains its accuracy for the entire period
before the next calibration cycle? It would have
gone wrong if there is no procedure for
validating during use.
Likewise, the laboratory equipment has the
same concern. The instrument especially a
volumetric apparatus like a suction dispenser,
for instance Piston Pipette (or popularly called
Micropipette), or Autopipette. Also, there are
volumetric glassware like Volumetric Flask,
Cylinder, Burette, and Pipette available in every
laboratory. In most cases, laboratories
determine a calibration process of volumetric
instruments once a year. Notwithstanding, there
is no validation during the period. It is noted
that laboratories accredited to ISO/IEC 17025:
2005, or those moving towards ISO/IEC 17025:
2017 should consider an instrument review as
intermediate check which is specified in section
6.4.10 of the ISO/IEC 17025: 2017 standard.
This is to ensure the performance of the Booth F11, Hall 103-104
instrument at all time.
The intermediate check of volumetric
measuring device can be done in-house by
most laboratories. There are basic tools Booth AG01
Hall 102
available in the laboratory required as following:
• Calibrated weighing scale
• Thermometer

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