Processing kodak motion picture films, module 3 analytical procedures

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Quartz Cell Check Perform the quartz cell check whenever a spectrophotometric method is used that does not require the measurement of a blank. 1. Inspect the cell for cracks, chips, and discoloration. If any are found, use another cell. 2. Rinse the cell with reagent water several times. 3. Fill the cell with reagent water. a. Wipe all outside surfaces of the cell completely dry with optical lens tissue, making sure all traces of lint are removed. b. Do not touch either of the optical faces with bare fingers. c. Look through the cell toward a light. Make sure nothing is in the water or on the optical surfaces of the cell (this includes tiny air bubbles, streaks, water spots, lint, fingerprints and anything else that might create an imperfection in the optical path). 4. Set the wavelength of the spectrophotometer to 240 nm for the ultraviolet range, or 650 nm for the visible range. a. Make sure that the cell holder is positioned correctly in the sample compartment. 5. Adjust the spectrophotometer to read an absorbance of 0 at the set wavelength. 6. Insert the cell in the cell holder. a. The correct cell position is determined in the initial cell check. There is usually a difference in absorbance if the cell is placed in the holder in a reversed position. Rotating the cell 180° in its holder should not give an absorbance difference greater than 0.005.1 b. The cell must fit firmly and squarely into the holder (no weak or misaligned springs or corrosion). c. The optical surfaces of the cell must be perfectly aligned (at right angles) with the light beam of the spectrophotometer. 7. Measure and record the absorbance reading. 8. The absorbance for each wavelength should be ≤ 0.093. 9. If the control limits exceed 0.093, do the following to clean the cell: a. Soak the cell in water or a mild sulfonic detergent. b. If residue persists, soak the cell in a mixture of: one volume of concentrate hydrochloric acid, three volumes of reagent water, and four volumes of methanol. Caution Prepare and use this mixture only in an adequate fume hood. c. Alkaline solutions, detergents containing optical bleaches, abrasive powders, fluorides, and materials that might etch optical windows should be avoided. 10. Rinse the cell thoroughly with reagent water. 11. If the reading is still high, check the purity of the reagent water or use another quartz cell. Note: Do not store a cell in reagent water; let air dry. Do not use swabs or other mechanical devices to remove surface contamination; use acid/alcohol cleaning solution. Sample Measurement 1. Perform the quartz cell check procedure, if the method does not require a blank. If it does involve the measurement of a blank, make sure that the cell is clean. 2. Follow steps 1 - 7 of the Quartz Cell Check, but substitute the sample for reagent water and use the wavelength indicated in the specific method (step 4 of the Quartz Cell Check). 3. Rinse the cell with reagent water. 4. Measure the absorbance of the blank, if the method requires one. 5. Using the appropriate calculation or table, determine the concentration of the component being measured. REFERENCES 1. Standard Practice for Describing and Measuring Performance of Ultraviolet, Visible, and Near- Infrared Spectrophotometers; American Society for Testing and materials: ASTM designation E 275-93, Philadelphia, PA, February 1994. 2. Standard Terminology Relating to molecular Spectroscopy; American Society for Testing and materials: ASTM designation E 131-94, Philadelphia, PA, August 1994. 2 Processing KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03
Processing KODAK Motion Picture Films, Module 3, Analytical Procedures MORE INFORMATION For more information on motion picture products, call or write to the Professional Motion Imaging office nearest you. Or access our home page on the Internet, web site address— http://www.kodak.com/go/motion You may want to bookmark our location so you can find us more easily. Processing KODAK Motion Picture Films, Module 3, Analytical Procedures KODAK Publication No. H24.03 Entertainment Imaging Kodak, Ektachrome, and Eastman are trademarks. Revision 9/01 Printed in U.S.A.
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©Eastman Kodak Company, 1999 Proce
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ECP-2-1101 Ferrocyanide in Ferricya
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3 Analytical Procedures for Chemica
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Spectrophotometric Determination of
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Potentiometric Determination of Bro
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PROCEDURE B For Seasoned Tank and R
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APPARATUS All volumetric glassware
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APPARATUS All pipettes and volumetr
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Potentiometric Determination of Amm
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PROCEDURE A. Sample Treatment 1. Pi
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Titrimetric Determination of Buffer
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Buffering Capacity Determination of
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Titrimetric Determination of EASTMA
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VISUAL TITRATION STATISTICS Repeata
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Back-Extraction of the Developing A
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Potentiometric Determination of Fer
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Recovery Recovery is used instead o
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CALCULATIONS For Na3Fe(CN) 6 g/L Na
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Cerimetric Determination of Sodium
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Bias Bias is a statistically signif
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APPARATUS Pipet (40-mL) Graduated C
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B. Analysis of Standards 1. Run eac
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Determination of Ferrous Iron in EA
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PROCEDURE Blank 1. Set a double-bea
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APPENDIX B This appendix contains t
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Titrimetric Determination of Hypo I
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B. Thiosulfate Determination 1. Sam
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Example Potentiometric Calculations
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APPARATUS Double Beam Spectrophotom
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APPENDIX II This appendix contains
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Calculations a. Range: 0.5-2.5 g/L
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APPENDIX 2 Typical Absorptivity mL
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Procedure Preparation of 10 g/L Iro
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Determination of Total Iron in East
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Determination of Total Iron in East
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Determination of Total Iron in EAST
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12. Press ‘ZERO’. The instrumen
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PROCEDURE A. Spectrophotometer Zero
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Absorptivity of Iron-Thiocyanate Co
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Potentiometric Determination of Unc
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Potentiometric Determination of Kod
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Titrimetric Determination of Persul
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APPARATUS Conical Flask with stoppe
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Potentiometric Determination of Sil
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APPARATUS METROHM 536 Titrator or e
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Potentiometric Determination of Sod
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PROCEDURE Treatment of the Sample 1
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Iodometric Determination of Sodium
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Determination of Sodium Sulfite in
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Procedure Treatment and Titration o
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Iodometric Determination of Sulfite
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Potentiometric Determination of Tot
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Automated Titration An example of a
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Titrimetric Determination of EASTMA
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VISUAL TITRATION STATISTICS Repeata
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Titration of the Developing Agent w
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Cerimetric Determination of CD-2 Co
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Cerimetric Determination of KODAK C
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Back-Extraction of CD-2 1. Add 50 m
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CALCULATIONS For Na3Fe(CN) 6 g/L Na
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Bias Bias is a statistically signif
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Hydroquinone in Sound Track Develop
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B. Thiosulfate Determination 1. Sam
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Examples: Titration mL 0.1 N Na 2S
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Potentiometric Determination of Pot
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PROCEDURE A. Preparation of Sample
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APPARATUS Conical Flask with stoppe
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Determination of the pH of the East
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Determination of the pH of Processe
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Determination of Sodium Metabisulfi
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II. Visual Endpoint Titrations A. R
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Viscosity Determination of Sound-Tr
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Titrimetric Determination Of Benzyl
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PROCEDURE B For Seasoned Tank Note:
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CALCULATIONS mL AgNO 3 that would b
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Titrimetric Determination of Buffer
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Titrimetric Determination of Citraz
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Potentiometric Determination of Eth
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Titrimetric Determination of Ferric
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Iodometric Determination of Ferricy
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Iodometric Determination of Formali
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Potentiometric Determination of Iod
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Potentiometric Determination of Pot
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Titration Note: For preparation of
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APPARATUS Spectrophotometer with a
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APPENDIX B Effect of Temperature in
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Potentiometric Determination of Sod
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Iodometric Determination of Total S
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Titrimetric Determination of Total
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