ASTM D Standard Test Method for Coulometric and Volumetric Determination of Moisture in Plastics Using the Karl Fischer Reaction (the Reaction of. ASTM D – 03() standard test method for coulometric and volumetric determination of moisture in plastics using the karl fischer reaction (the reaction of. ASTM D Standard Test Method for Coulometric and Volumetric Determination of Moisture in Plastics Using the Karl Fischer Reaction.
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Be the first to comment! The time and temperature values are arrived at by testing a similar material and varying the temperature and bake time independently atm determine optimal conditions for removal of all water in the sample.
The FieldLab 58 has also earned a U. Knowledge of the moisture content can be important since some polymers degrade when molded wet resulting in reduced properties. It is recommended that molded specimens be cut into smaller parts prior to testing recommended maximum size 4 by 4 by 3 mm 9.
This apparatus has the capability to generate or deliver iodine to react stoiciometrically with the moisture present in atsm titration cell. Molecular sieve or suitable desiccant must be used in the drying tubes for the nitrogen carrier gas.
Most asttm plant or lab operating conditions are adequate for sampling. Prepare the instrument as detailed in Section Move the sample boat into the oven and begin analysis.
Take care not to get excess moisture on the outside surface of the capillary. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Moisture will affect the processability of some plastics. Record the sample weight. This is how compEAct works — a sulfur and nitrogen analyzer from Analytik Jena developed for the petrochemical industry. A number in parentheses indicates the year of last reapproval. Preparation of Apparatus NOTE 3—The condition of both anode and cathode solutions are determined by the appearance of the?
Hygroscopic resin samples shall be protected from the atmosphere. The sample container shall be properly sealed to d8669 moisture pick-up before testing. If the temperature is too low or the retention time too short all of the water might not be driven off.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service d68869. Sample containers must be adequately dried and the environment in which sampling is performed must not add additional moisture to the sample.
The current or volume required to generate the iodine converts to micrograms of water present. Summary of Test Method 2 3. High moisture content causes surface imperfections that is, splay or bubbling or degradation by hydrolysis.
The moisture collected in the solution within the titration cell is determined using the reaction of water with I2.
The instrument f6869 now ready for sample analysis. Moisture Content by Karl Fischer. Keep the carrier gas?
Sample size shall be adjusted to obtain an accurate moisture measurement. This is probably caused by the asttm of water due to thermal decomposition or solid phase polymerization of the sample.
Moisture Content by Karl Fischer ASTM D
The new analyzer v6869 an updated modular design that eases routine maintenance and features measurement ranges from 2ppm to percent and limits of detection Originally approved in If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
The percent moisture in the sample is then calculated based on the sample weight used and is given as a direct digital readout. ASTM S6869 takes no position respecting the validity of any patent rights aatm in connection with any item mentioned in this standard.
Standards can be obtained from appropriate standards authorities. Two methods of checking the instrument are listed here, a micro-capillary method and a sodium citrate method. The permanganate index is an assessment of water quality typically used for freshwater and treated d669 waters.
Jena, September 26, — 24 hours of continuous operation, samples, without monitoring and in minimum space: Heat the boat in the oven for 2 min, and then allow the boat to cool for 2 min prior to the introduction of samples. As solutions age, viscosity will increase and solution color will turn dark.
Current edition approved Sept. It can be more accurate than simple weight loss because in the weight loss method volatiles other than water can be lost which is translated into an artificially high water content. ASTM D – 03 standard test method for coulometric and volumetric determination of moisture in plastics using the karl fischer reaction the reaction of iodine with water 0. Selection of Optimum Heating Temperature is discussed below.
Spectro Scientific has introduced an upgrade to its FieldLab 58 consisting of a more powerful X-ray fluorescence XRF module and newly designed filter that significantly improve the limits of detection for wear metal elements in oil.
L of neutralization x6869 or check solution. Adtm content in percent or parts per million is determined. Volumetric instruments measure the d669 of solution containing I2 that is required to keep the current constant. No comments were found for ASTM D – 03 standard test method for coulometric and volumetric determination of moisture in plastics using the karl fischer reaction the reaction of iodine with water.
Low moisture with high temperature causes polymerization. The methanol traps the water which is titrated to an end point with d68699 Karl Fischer reagent to determine the amount present.