Abstract: The testing process of solids in liquor is cumbersome. The personnel operation and equipment factors have a great influence on the test results. Labthink CLASSIC 830 migration and non-volatiles analyzer can greatly optimize the test process of solids. This article uses the equipment to test the solid content of a brand of liquor as an example, introduces the optimized test process, equipment parameters, scope of application, etc., to provide a reference for enterprises to test the solids in liquor in a simple, fast and effective way.
Key words: liquor, solids, migration and non-volatiles analyzer, evaporation, drying, constant weight
1, meaning
Solids in liquor refers to non-volatile substances and hard-to-volatile substances remaining after evaporation and drying of white wine. These substances are mainly derived from storage containers, pulp water, spices, additives and the like. The traditional solids test test process is a complicated process in which a certain amount of white wine is placed in a constant weight evaporating dish, evaporated, dried, cooled, weighed, dried, cooled, weighed until constant weight, and the test process A slight inadvertent operation will affect the test results. For example, the water bath in the evaporation station is not regularly scrubbed, the water used is tap water, the water bath is adhered to the bottom of the evaporating dish, the silica gel in the dryer is discolored, the porcelain plate is dusty, and the tester Factors such as taking the evaporating dish directly by hand will cause test deviation, and avoiding the manual operation and the influence of the equipment on the test process can improve the reliability of the test result.
In view of the above test problems, this paper cites a test equipment that can integrate evaporation, drying, weighing, soaking liquid recovery and other functions without any human operation and excellent precision, accuracy and stability to test the solid content in liquor.
2, test samples
The test sample used in this test is a fragrant liquor produced by a company.
3. Test basis
This test is based on the national standard GB/T 10345-2007 "Liquor Analysis Method", which is applicable to the analysis of various flavor liquors.
4, testing equipment
The test equipment used in this paper is CLASSIC 830 migration and non-volatiles analyzer, which is independently developed and produced by Jinan Languang Electromechanical Technology Co., Ltd.
Figure 1 CLASSIC 830 migration and non-volatiles analyzer
4.1 Principle of the test
The evaporating dish containing the liquid to be tested is placed on the tray rack corresponding to the corresponding number of the device, and when the liquid in the evaporating dish evaporates to dryness under the set temperature condition, the liquid automatically enters the constant weight stage, that is, the device automatically performs according to the preset conditions. The batch was dried and weighed until the weight difference between the two tests before and after met the constant weight condition, and the test was finished.
4.2 Equipment parameters
The test range is 0.1 ~ 80,000 mg, the resolution is 0.01 mg; the test temperature range is from room temperature to 130 °C, the temperature control accuracy is ±0.3 °C; the evaporation, drying and weighing are integrated, which can automatically and accurately weigh, the test process No need to participate manually; the volatile reagents can be collected and processed in the airtight system, and the requirements for the laboratory ventilation system are low; the international leading rapid evaporation technology is used to shorten the evaporation time; 9 station design, test The process is independent of each other and the test efficiency is high; through the special design of the constant temperature chamber and the weighing system, the test accuracy of the equipment is greatly improved.
4.3 Scope of application
(1) This equipment is suitable for the determination of the total migration of food contact materials and products.
(2) Applicable to the determination of non-volatiles in packaging materials for pharmaceuticals.
(3) Expanded for the determination of total solids, moisture and loss on drying and fat in the food industry. Such as the total solids of liquor products, the total solids and non-sugar solids of rice wine products, the determination of total solids of beverages and beverages, etc.; the moisture content of meat and meat products and fats Determination, etc.
(4) Meet GB 31604.8-2016, GB 9740-2003, ISO 759-1981, YBB00342002-2015, YBB00132002-2015 and other related pharmaceutical packaging materials standards, GB10345-2007, GB 1445-2000, GB 18186-2000, GB 18187- 2000, GB 20884-2007, GB 20886-2007, GB 23530-2009, GB 31604.3-2016, GB 317-2006, GB 5009.236-2016, GB 5009.3-2010, GB 5009.3-2016, GB 5497-1985, GB 5528- 2008, GB 8304-2002, GB 8967-2007, GB 9695.15-2008, GB 9697-2008, GBT 13662-2008, LST 3217-1987, QBT 1173-2002, QBT 1174-2002, QBT 1686-2008, QBT 2132- 2008, SBT 10009-2008, SBT 10018-2008, SBT 10019-2008, SBT 10020-2008, SBT 10021-2008, SBT 10022-2008, SBT 10104-2008, SBT 10170-2007, SBT 10208-1994, etc. Industry Standard.
5, the test process
(1) Measure the sample
A 50.0 mL sample was taken from the sample to be tested and placed in an evaporating dish that had been dried to constant weight in a migration and non-volatiles analyzer.
(2) Setting parameters
Place the evaporating dish on the tray holder of the corresponding number in the test chamber of the equipment and close the test chamber door. Set the evaporation temperature to 100 ° C, test mode to select the difference mode, the difference is set to 0.3 mg, the weighing time interval is 1 h, the test (drying) temperature is set to 103 ° C and other test parameters, and the test is started.
(3) End of test
The equipment automatically evaporates. After it is evaporated to dry, it enters the drying stage. The equipment is automatically weighed every 1 hour. When the weighing difference is less than 0.3 mg, the constant weight state is reached. When the test is finished, the equipment automatically displays and calculates the final. Test results.
6, test results
The equipment showed that the weight of the residual substance in the evaporating dish was 0.81 mg, and the solid content was 16.2 mg/L, that is, the solid content of the scented liquor sample tested in this test was 0.016 g/L.
7. Conclusion
Solid matter is one of the must-check items in the quality control of liquor. Its cumbersome test process often plagues operators and is also prone to test errors. This paper introduces an optimization method for solids testing. From the perspective of the test process, the automation of the equipment. High degree, evaporation, drying and weighing are completed in the same test chamber, and the cooling process is reduced, avoiding the frequent interference with the test results in the process of taking the evaporating dish, man-made operation, replacing different equipment, etc., and reducing the test time and improving The test efficiency is high, and the test results have high precision and good accuracy. In addition, the equipment collects the vaporized liquid and reduces the environmental impact of the test process. Jinan Languang Electromechanical Technology Co., Ltd. is a high-tech enterprise specializing in R&D, production and packaging testing services for packaging inspection equipment. The existing equipment includes gas permeability tester, water vapor transmission rate tester and oxygen transmission rate test. Instrument, torque meter, negative pressure seal tester, etc., used to detect the barrier performance of the liquor packaging, the opening and sealing performance of the bottle cap, etc., to understand the equipment and testing service information, you can log in to view. The more you understand, the more you trust! Labthink is looking forward to enhancing technical communication and cooperation with enterprises and institutions in the industry!
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