Temperature and Humidity requirements for a Calibration Laboratory

D

DuaneG

#1
What are the requirements for a calibration lab regarding temperature and humidity. Our room is so cold because they are worried about humidity. I want to give them numbers. Our average is 64 degrees and 28% humidity.
thanks
 
Elsmar Forum Sponsor
D

D.Scott

#2
Duane - your lab should function under controlled conditions suitable for performing the tests/calibrations on your scope. Check the specs. you are working to and see if there are specific requirements.

Dave
 

CarolX

Super Moderator
Super Moderator
#3
Duane, I moved your thread to this board for better response to your question. I suggest you scroll to the bottom of the page for links to similar threads.
 

Hershal

Metrologist-Auditor
Staff member
Super Moderator
#4
DuaneG,

The Recommended Practices (RPs) available from NCSLI (National Conference of Standards Laboratories - International) provide some guidance on lab environmants. http://www.ncsli.org

Generally the guidelines for dimensional: 20 C +/- 2 C, 30% to 40% RH.
Electrical/electronic: 23 C +/- 3 C, 40% to 50% RH.

Hope this helps.

Hershal
 
J

JerryStem

#5
Our requirements were dictated by the equipment we use. They have specs like 10-100% humidity and 0-100 degrees Celsius. Basically, it didn't matter! (Mostly X-Ray Fluorescence and Beta Backscatter coating thickness instruments).

We set our specs at reasonable levels we could achieve by normal AC and heating, 60-80F and 20-80% RH. We have temp/humidity gauges that can be adjusted/calibrated by traceable standards but since we don't NEED it, we stopped having them certified. We mainly keep them to record the numbers on our certs because customers expect it.

Jerry
 
N

nitram

#6
Hi Jerry,
Keep in mind that the humidity levels recommended is due to:
1. Corrosion risks increase above 55% RH .
2. Electrostatic discard (ESD) risks increase below 35%RH .


I hope that I'm not misinformed ;-).

Martin
 
W

W. de Jong

#7
Weigh the influences

Hi,

If the lab is not a controlled environment then you should examine the influence of the factors on your testresults. Take the factor into account in the uncertainty calculation. If the weight factor is very high you should take out the risk by controlling that factor. e.g. What we did for atmospheric pressure: measurements showed an atm. pressure of 1018 ± 12 hPa in a timespan of a year. The actual influence of the pressure was not a big contribution to the uncertainty of our method of analyses.
Validated it with test results and there was/ is no problem. We don't have to control the atm. pressure. Same with ambient temperature, saved us the cost of an airco.

BR, Wouter
 
G

Giselle

#8
Duane,

for dimensional measurements 20C (68F) is nominal, you need to evaluate what types of measurements you are making, Chrome/Steel (gage blocks) expand and contract at a rate of 6 microinches per inch of material per degree C. If your measurments aren't any better than 0.00001, then you should be fine at that temperature, but it does sound a little chilly.
 
T

TWallace - 2008

#9
Temperature and Humidity requirements for a Plastics testing lab

I need the assistance of the Cove. I am in the process of upgrading our HVAC system for our testing lab. The ASTM temperature and humidity requirements for conditioning and testing are 23°C ±2 and 50%RH ±5%.

The monitoring equipment information that I have been able to find has acceptable accuracy for temperature but the accuracy for RH for the instruments that I have seen up to this point have been in the range of 1.5 to 2.0%. Does anyone have information regarding monitoring equipment with better RH monitoring accuracy?

If I can't find monitoring equipment any more accurate than 2.0% I will have to control humidity to 50%±3.

Any help would be appreciated.
 

Hershal

Metrologist-Auditor
Staff member
Super Moderator
#10
Depends a lot on your requirements.....

If the HVAC system controls to +/- 5%, then a chart recorder is typically around 2% accracy.....a datalogger is better and will feed a PC with long term monitoring, useful to make sure you stay controlled.

Have the monitoring instrument(s) calibrated by a lab accredited for Temp and RH under ISO/IEC 17025. Make sure they report the measurement uncertainty.

Hope this helps.

Hershal
 
Thread starter Similar threads Forum Replies Date
V Temperature/humidity requirements in internal metrology laboratory General Measurement Device and Calibration Topics 3
D Sterile Medical Device Temperature and Humidity (Storage) Labeling Requirements EU Medical Device Regulations 5
M Temperature and Humidity requirements for Raw Material Storage and Quality Labs IATF 16949 - Automotive Quality Systems Standard 13
D PCBA Lab Temperature & Humidity Requirements - Advice needed Manufacturing and Related Processes 7
I Temperature and humidity storage requirements? US Food and Drug Administration (FDA) 6
L Internal Calibration Laboratory Requirements - Ambient temperature, Humidity, Etc. Statistical Analysis Tools, Techniques and SPC 3
C One Time Service Supplier - Temperature and Humidity Testing Service ISO 13485:2016 - Medical Device Quality Management Systems 5
Q Weigh Scale Electronics - Suggested Storage Humidity and Temperature Manufacturing and Related Processes 7
B Do I need to perform Gage R&R on a Digital Temperature & Humidity Gage Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 18
M Daily Temperature and Humidity Graph template Document Control Systems, Procedures, Forms and Templates 2
B Temperature/Humidity inside a store Human Factors and Ergonomics in Engineering 7
H What is the ISO Class 7 cleanroom requirement on Temperature and Humidity ? Manufacturing and Related Processes 3
T ISO 2230 (Guidelines for Storage of Rubber Products) - Temperature, Humidity & Light Other ISO and International Standards and European Regulations 8
T Calibration Laboratory Temperature/Humidity goes out of tolerance due to Power Loss General Measurement Device and Calibration Topics 9
D Buying a Temperature and Humidity Device, and Calibration AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 8
D How to use temperature and humidity environmental control data? Statistical Analysis Tools, Techniques and SPC 18
B Analytical Lab Environmental Condition (Temperature & Humidity Control Limit) General Measurement Device and Calibration Topics 5
S Temperature and Humidity Chamber Verification General Measurement Device and Calibration Topics 5
C Need source for temperature and humidity gage General Measurement Device and Calibration Topics 8
M Temperature/humidity monitoring process procedure Manufacturing and Related Processes 2
N Uncertainty for Humidity Probes - Temperature Effect from 0.5?C dew point = 1.3%rh Measurement Uncertainty (MU) 2
J Controlling Temperature and Humidity in the CMM Room and does anyone use Artifacts? Inspection, Prints (Drawings), Testing, Sampling and Related Topics 8
D Is Temperature & Humidity monitoring in a Metrology / Test Laboratory required? General Measurement Device and Calibration Topics 28
L Seeking Data Logger Validation Example - Temperature and Humidity General Measurement Device and Calibration Topics 3
P Temperature and Humidity Device Calibration - Came back as Out Of Calibration General Measurement Device and Calibration Topics 8
C Convert Dewpoint Temperature specification to RH (Relative Humidity) General Measurement Device and Calibration Topics 2
P Environmental Conditions for Calibration - Temperature and Humidity General Measurement Device and Calibration Topics 22
R Laboratory Environmental Controls - Temperature and Humidity General Measurement Device and Calibration Topics 5
B ASME B89.6.2 - Temperature and Humidity Environment for Dimensional Measurements General Measurement Device and Calibration Topics 6
R QS-9000 3rd edition - Laboratory Process Control - Temperature and Humidity General Measurement Device and Calibration Topics 5
Judy Abbott General temperature used in the blasting process and laser process Manufacturing and Related Processes 2
R IEC 60601-1 - 11.1.3 e) Test criteria - Temperature Measurements IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
T Temperature Requirements For In House Calibration - AS9100 AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 16
R SAT (System Accuracy Test) temperature according to AMS2750E AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 1
W Insulation requirements of BF type infant skin temperature probe IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
B Temperature loop: partial calibration General Measurement Device and Calibration Topics 10
D ASTM C1064 Temperature Measuring Device General Measurement Device and Calibration Topics 2
C ETO Sterilised Class II Medical Device - Required Temperature Storage ISO 13485:2016 - Medical Device Quality Management Systems 1
M Microscope slide warmer temperature control General Measurement Device and Calibration Topics 4
S ISO 18223-2 Temperature symbol in the Legend table in the Instructions for Use Other ISO and International Standards and European Regulations 4
B ASTM F2924-14 /ASTM F3001 - Room temperature classification criteria Other US Medical Device Regulations 0
O Selection of a calibrator (pressure generator, temperature) for my field devices General Measurement Device and Calibration Topics 2
shimonv Symbol for temperature limit EU Medical Device Regulations 6
M Pharmaceuticals Warehouse temperature control (room temperature) Pharmaceuticals (21 CFR Part 210, 21 CFR Part 211 and related Regulations) 3
T 5ºC Storage Temperature Validation - Urology disposable devices EU Medical Device Regulations 3
M CQI-9 monitoring of temperature in die Various Other Specifications, Standards, and related Requirements 2
C ISO 11607-1 Packaging System - Temperature and shipping conditioning Other Medical Device Related Standards 4
G Calibration Laboratory Dimensional Temperature Question General Measurement Device and Calibration Topics 2
P Qualification of a Temperature Controlled Unit have to be empty? Qualification and Validation (including 21 CFR Part 11) 5
D What is the exact Temperature Coefficient Value to be set on a Conductivity Meter? General Measurement Device and Calibration Topics 2

Similar threads

Top Bottom