Refractometer calibration test kit developed
Simple field refractometer calibration test kit.
What Has ANR Done?University of California Cooperative Extension farm advisors Stephen Vasquez and Shannon Mueller developed a simple calibration test kit and protocol for refractometer calibration, use and maintenance. The test kit can be easily assembled for under $5. The use and maintenance protocol will help preserve the integrity of the refractometer and ensure years of error-free service. Growers can download the article "Refractometer Calibration, Use and Maintenance," which describes each step in the process, at http://cefresno.ucdavis.edu/files/43066.pdf.
Refractometer calibration and maintenance improves accuracy of sugar dataGrowers can easily make their own refractometer calibration test kit for relatively little cost, saving a grower roughly $100 to $200, the cost of purchasing a commercial test kit. The test kit and user protocol can be used for the entire season assuring growers that their refractometers will give them accurate sugar readings. The protocol for refractometer use and maintenance will give ºBrix data consistent with that collected by field scouts and packers.
Clientele Testimonial"Hundreds of dollars have been saved by properly calibrating my company's refractometers at the beginning of the season using the UC Cooperative Extension protocol. By doing so, optimal fruit maturity is determined and harvest labor maximized." - Fresno County grape grower
Supporting Unit:Central Valley Region Fresno County
Stephen Vasquez, viticulture farm advisor, firstname.lastname@example.org
Shannon Mueller, agronomy farm advisor, email@example.com
UCCE Fresno County, 1720 South Maple Avenue, Fresno CA 93702