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NIST Traceable Certificate of Calibration - Optical Refractometers (requires refractometer purchase)

Marsoni M251S
Sale price$55.00
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NIST Traceable Certificate of Calibration - Optical Refractometers (requires refractometer purchase)Certificate of Calibration for new Sper Scientific Optical Refractometers Refractometer will be tested in our in house lab to confirm that it meets or exceeds published specifications Includes Complete Documentation: Each certified product comes with: Serial Number Certification Label Certification Testing Report PLEASE NOTE THAT THIS IS FOR NEW OPTICAL REFRACTOMETER CERTIFICATION ONLY REQUIRES PURCHASE OF A NEW REFRACTOMETER. Applicable Sper
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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Jason Stevens
Los Angeles, US
★★★★★ 5
Cool comfortable good looks
Color: Navy Blue, Size: X-Large
Nice fit really comfortable good color not a hot shirt
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Reviewed in the United States on May 18, 2026
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Elle Cooper
West Palm Beach, US
★★★★★ 5
Perfect for in the field or the office.
Color: Blue Gray, Size: XX-Large
Perfect for use in the field or in the office. Great quality and the fit was perfect!!
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Reviewed in the United States on May 17, 2026
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M. Bracke
Lexington, US
★★★★★ 4
Good inexpensive shirt.
Color: Black, Size: X-Large
Nice shirt for the price. Good fit to size. Cotton/ poly blend. Does not wrinkle too bad after washing.
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Reviewed in the United States on December 8, 2025
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Robert
West Palm Beach, US
★★★★★ 1
Runs way too small
Color: Black, Size: Medium
If you live in the U.S. and wear medium, a large will fill you perfectly. I wear large and the “large” is objectively a medium in the chest arms and neck. Fix your sizes.
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Reviewed in the United States on February 28, 2026
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Christopher
West Palm Beach, US
★★★★★ 5
True fit
Color: Dark Red, Size: Medium
Shirt fits to size, comfortable. I have no regrets.
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Reviewed in the United States on May 31, 2026

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