California Code of Regulations
Title 3 - Food and Agriculture
Division 3 - Economics
Chapter 1 - Fruit and Vegetable Standardization
Subchapter 10 - Raw Products Inspection for Processing Analysis Different
Article 1 - Inspection of Grapes for Wine and By-Products
Section 1660 - Method of Testing for Soluble Solids
All grape samples collected for soluble solids testing from the same lot or load shall be combined and completely crushed without unnecessary crushing of the stems. The juice sample shall be stirred and mixed thoroughly prior to testing.
A sieve or metal screen strainer shall be used to strain any pulp or solids from the sample to be tested.
The juice sample shall be tested, using a hand-held temperature compensating refractometer or refractometer analytical unit approved by the Secretary.
The refractometer or refractometer analytical unit shall be clean and free from any contamination prior to each test.
The hand-held refractometer shall be immersed to a depth in the juice sample that will ensure complete coverage of the prism. The prism cover shall be closed immediately and the refractometer lifted out of the sample and read to the nearest 0.1 degree.
1. Amendment filed 12-4-95; operative 1-3-96 (Register 95, No. 49).
Note: Authority cited: Sections 407 and 41194, Food and Agricultural Code. Reference: Sections 41191 and 41192, Food and Agricultural Code.
