Florida Administrative Code › 20 - DEPARTMENT OF CITRUS › 20 - Departmental › Chapter 20-65 - COLOR GRADING - PROCESSED ORANGE PRODUCTS › Section 20-65.004 - Procedure

Current through Reg. 50, No. 138; July 16, 2024
(1) The colorimeter or spectrophotometer is
				to be kept with power connected and maintained on standby or in accordance with
				manufacturer's instructions. Turn the instrument to "on" position for ten
				minutes before making measurements, or follow directions of manufacturer. All
				light sources shall conform to CIE (1931) illuminant C. All OJ4 color tube
				calibration values are to be obtained from the Winter Haven, FL laboratory of
				the Processed Products Branch, Fruit and Vegetable Division, Agricultural
				Marketing Service, United States Department of Agriculture.
(2) For the HunterLab Model D45 Citrus
				Colorimeter, standardize Citrus Red (CR) and Citrus Yellow (CY) with OJ4 color
				tube indexed for the instrument. Insert sample of juice at indexed position for
				the sample tube and read CR and CY and record.
(3) For the HunterLab Model D45D2 Citrus
				Colorimeter, standardize Y, CR and CY with OJ4 color tube indexed for the
				instrument. Insert sample of juice at indexed position for the sample tube and
				read CR, CY and Color Number (CN) and record.
(4) For the Macbeth Color-Eye
				Spectrophotometer Model 1500 or Model 2020+ with Optiview Software Package,
				equipped with the 19 mm aperture tube adapter and operated with small area view
				(SAV) setting with UV and gloss included (CRIIS), standardize X, Y, and Z with
				white tile with SAV plate in place. Replace SAV plate with tube adapter and
				insert sample of juice at indexed position for the sample tube and read color
				number values as shown on instrument, then record.
(5) For the Macbeth Color-Eye
				Spectrophotometer Model 3000 or 3100 with Optiview Software Package, equipped
				with the 19 mm aperture tube adapter and operated with small area view (SAV)
				setting with UV and gloss excluded (DREOS), standardize X, Y, and Z with white
				tile with SAV plate in place. Replace SAV plate with tube adapter and insert
				sample of juice at indexed position for the sample tube and read color number
				values as shown on instrument, then record.
(6) For the GretagMacbeth Color i5
				Spectrophotometer with Color IQ Basic Software and 19mm Orange Juice Test Tube
				Holder. UV and Gloss exclusion is processed by software. Calibration is
				prompted by software. When completed replace Orange Juice Holder. Push F6 and
				Color Number is reported. For confirmation, lights illuminated on front of
				Color i5 should be: LAV, Reflection, D65, Excluded and Calibrated. Calibration
				required every 24 hours.
(7) To
				determine color number or equivalent color score, use the figures in
				subsections (2)-(5) to calculate the color number or equivalent color score as
				set forth in Rule  20-65.005,
				F.A.C.
Rulemaking Authority
					 601.10(7),
					 601.11,
					 601.24 FS. Law Implemented
					 601.10(7),
					 601.11,
					 601.24
					 FS.
Formerly 105-1.19(1)(r), (2)(b), Amended 1-1-75, Formerly
					 20-65.04, Amended 1-30-86, 1-12-92, 6-21-93, 1-17-95, 10-26-97,
					 8-22-06.