Processing kodak motion picture films, module 3 analytical procedures
Processing kodak motion picture films, module 3 analytical procedures Processing kodak motion picture films, module 3 analytical procedures
17. Place the sample cell into the sample well and press down firmly to seat it into place. 18. Close the Light Shield. While holding the On button down, allow the meter reading to stabilize. Read and record the mg/L iron from the 0-2 mg/L scale (bottom scale). 19. Open the Light Shield and remove the sample cell. 20. Multiply the mg/L iron (Fe) reading (obtained in step 18) by 5 to obtain the iron content of the sample in g/L: 5000 fold dilution g/L iron = (reading in mg/L iron) 1000 mg/g g/L iron = (reading in mg/L iron) (5) Example g/L iron = (0.89 mg/L) (5) g/L iron = 4.45 g/L * Test instructions are adapted from DR 100 Colorimeter Manual (1987) of HACH COMPANY, Loveland, Colorado with the exception of steps 1, 2, and 20. 2 Processing KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03
Determination of Total Iron in EASTMAN Color Films, Process ECN-2 “UL” Type Bleach Using a HACH Pocket Colorimeter Test Kit ECN-0026-01 INTRODUCTION This test kit (HACH catalog no. 46700-22) is used to determine total iron in Eastman Color Films, Process ECN-2, “UL” type bleach samples. The bleach samples are diluted and mixed with a FerroVer® Iron Reagent Powder Pillow to create a colored solution. This colored solution is measured using the HACH Pocket Colorimeter provided with the test kit. The absorbance is then used to calculate the amount of iron in the bleach. “Determination of Total Iron in Eastman Color Films, Process ECN-2, UL Type Bleach Using HACH Colorimeter Test Kit” (ECN-2-UL-3280) is used with the previous analog colorimeter Model DR 100. Use of this method requires handling of potentially hazardous chemicals. Material Safety Data Sheets (MSDS) should be consulted for each chemical before use. These can be obtained from each chemical supplier. PRECISION AND BIAS Repeatability Standard Deviation (1sr) ) & 95 Percent Confidence Estimate (not including bias) Repeatability standard deviation is an estimate of the variability one trained analyst should be able to obtain under favorable conditions (analyzing a sample, with one instrument, within one day). The 95 percent confidence estimate (calculated using the repeatability standard deviation) around a single test will include the mean value 95 percent of the time. To obtain the repeatability data, a single skilled analyst performed five (5) replicates on each of the following solutions during methods development. 1. A “fresh” UL type bleach tank prepared with all components at their respective “working tank” aim concentrations. 2. A “seasoned” UL type bleach tank analyzed colorimetrically as received, at 5.59 g/L iron. 3. The same “seasoned” solution as in number 2, above, reanalyzed after making an analytically weighed, standard addition of 1.68 g/L iron. Sample “Fresh” (Prepared at 4.94 g/L) “Seasoned” As Received “Seasoned” plus Standard Addition Mean (g/L Iron) Bias Bias is a statistically significant deviation of the mean from the known mix level at a 95 percent confidence level. It is determined for fresh samples only. Bias is not determined for seasoned samples, since the component concentration level is not determined independently of the test method. A bias of 0.10 g/L iron was found to be statistically significant at the 95 percent confidence level, but was judged not to be practically significant. Recovery Recovery is used for seasoned samples, since the component concentration level is not determined independently of the test method. It is defined as the calculated mean for the seasoned sample with a standard addition of the component minus the mean for the seasoned sample, divided by the actual amount of the standard addition. It is expressed as a percentage. Statistically, the recovery of 87.50 percent was statistically different from 100 percent at the 95 percent confidence level, but was judged not to be practically significant. Processing KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03 1 Iron N Repeatability Standard Deviation, 1S r (g/L Iron) 95 Percent Confidence Estimate (g/L Iron) 5.04 5 0.065 ± 0.18 5.59 5 0.022 ± 0.06 7.06 5 0.065 ± 0.18
- Page 39 and 40: CALCULATIONS For Na3Fe(CN) 6 g/L Na
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- Page 49 and 50: APPARATUS Pipet (40-mL) Graduated C
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- Page 71 and 72: APPARATUS Double Beam Spectrophotom
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- Page 75 and 76: Spectrophotometric Determination of
- Page 77 and 78: Calculations a. Range: 0.5-2.5 g/L
- Page 79 and 80: APPENDIX 2 Typical Absorptivity mL
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- Page 83 and 84: APPARATUS All volumetric glassware
- Page 85 and 86: Procedure Preparation of 10 g/L Iro
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- Page 89: Determination of Total Iron in East
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- Page 107 and 108: APPARATUS Conical Flask with stoppe
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- Page 111 and 112: APPARATUS METROHM 536 Titrator or e
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- Page 115 and 116: PROCEDURE Treatment of the Sample 1
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- Page 133 and 134: Titrimetric Determination of EASTMA
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17. Place the sample cell into the sample well and press<br />
down firmly to seat it into place.<br />
18. Close the Light Shield. While holding the On button<br />
down, allow the meter reading to stabilize. Read and<br />
record the mg/L iron from the 0-2 mg/L scale (bottom<br />
scale).<br />
19. Open the Light Shield and remove the sample cell.<br />
20. Multiply the mg/L iron (Fe) reading (obtained in step<br />
18) by 5 to obtain the iron content of the sample in g/L:<br />
5000 fold dilution<br />
g/L iron = (reading in mg/L iron)<br />
1000 mg/g<br />
g/L iron = (reading in mg/L iron) (5)<br />
Example g/L iron = (0.89 mg/L) (5)<br />
g/L iron = 4.45 g/L<br />
* Test instructions are adapted from DR 100 Colorimeter<br />
Manual (1987) of HACH COMPANY, Loveland, Colorado<br />
with the exception of steps 1, 2, and 20.<br />
2 <strong>Processing</strong> KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03
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