“Excellent quality. With this refractometer, I can reliably measure my homemade "super gut" kombucha residual sugar content (l. gasseri, l. reuteri, and b. coagulans -- fermented at 106 degrees using a sous vide stick). 4 grams per 100g. Yeah! Easy to see through when pointed at my kitchen light. Instructions were very helpful. The cushioned box keeps it safe and secure. Thanks so much for the fast shipping and nice packaging too.”
