Different manufacturing processes of plastic films lead to differences in the surface morphology of the product, which usually affects the smoothness of film when it passes through machines and equipment. Effectively control the coefficient of friction（COF) of packaging films to improve production line efficiency. coefficient of friction（COF) has always been a major difficulty in the flexible packaging industry. The coefficient of friction (COF) of packaging film production processes is an issue that film manufacturers and distributors have to grapple with every day. In order to solve this problem, film manufacturers usually use additives in the film manufacturing process to further improve the film manufacturing process, thereby controlling the friction coefficient of flexible packaging and minimizing the impact of this adverse factor.  Click here to know more about Coefficient of friction tester Coefficient of friction tester(COF tester) is used to measure the coefficient of friction of plastic films, sheets, paper and other materials when they slide on the surface of itself or other materials. It is used in quality inspection, drug inspection, scientific research, packaging, film, food, medicine, daily chemical and other industries. In order to detect changes in friction coefficient of materials under various conditions, packaging film manufacturers generally use professional friction coefficient testers as a means of detection and control.   standards:  ASTM D1894-2014, ISO 8295-2004, TAPPI 816 Therefore, it is the time for film manufacturers to find the best way to control the coefficient of friction so that direct users and end users can obtain high-quality products with large output and few failures that can continue to operate, and tailor solutions according to customer needs and actual applications. problems that need to be faced. 

Abstract: Plastic ampoules are widely used in the pharmaceutical industry due to their convenience, ease of opening and safety. However, compared with glass ampoules, the oxygen barrier performance of plastic ampoules is lower, which may lead to the deterioration of samples. Therefore, the oxygen barrier performance of plastic ampoules is one of the key performance indicators for pharmaceutical manufacturers to consider. In this paper, the oxygen permeation rate of plastic ampoules was tested by using Y310 Coulomb Electricity Method Oxygen Permeation Tester developed by GBPI. The test standard, test procedure and test results were introduced, and the oxygen barrier performance of plastic ampoules was effectively evaluated by taking the whole plastic ampoule as the test object. Ampoules Ampoule is a kind of sealed vial used for storing injection, vaccine, serum, etc. The capacity is usually 1~25 mL, and it can also be used for storing oral solution. Glass ampoules were firstly used, but there have been many problems such as not easy to open with bare hands, risk of cutting fingers, easy to wear the drug markings on the surface of the bottle, and the glass fragments from opening may cause infusion reactions, which affect the safety of medication use. Due to its advantages, plastic is gradually becoming a substitute for glass ampoules. Compared with traditional glass ampoaules, plastic ampoules are convenient to operate, easy to open, less likely to produce fragments and particles during opening, and have high safety, and are widely used in many pharmaceutical industries. In the process of application, the oxygen barrier performance of plastic ampoule is one of the main factors affecting the quality and safety of drugs. If the oxygen barrier performance of plastic ampoule is low, i.e. the oxygen transmission is high, some components of the drug will easily react with the oxygen penetrating into the container and be oxidized, resulting in discoloration, precipitation, reduced efficacy and even toxic substances. Therefore, drug manufacturers should pay attention to the oxygen barrier performance of plastic ampoules and strengthen the monitoring of oxygen transmission rate of plastic ampoules. Testing standards There is no pharmaceutical industry standard for oxygen transmission rate testing of plastic ampoules. Due to the unique opening structure and molding process, the thickness of the plastic at the opening fracture is smaller than that of the other parts. The different thicknesses further cause the difference in oxygen transmission rate of different parts of the plastic ampoule, so the oxygen transmission rate of the plastic sheet cannot be used to indicate the overall barrier performance of the plastic ampoule. The oxygen barrier performance should be evaluated from the perspective of testing the whole container. The standard used for the test involved in this paper is GB/T 31354-2014 "Test Method for Oxygen Permeability of Packaging Parts and Co...

Abstract The tightness of the mask is an important indicator for evaluating the protective performance of the mask. The better the tightness, the better the fit between the selected mask and the user's face shape. The user can get the expected protective effect by wearing this mask. This article briefly introduces the test method, principle and equipment of the mask tightness test. From the test process described in this article, it is relatively simple to use the GB-MH180 Mask Tightness Tester to test the mask fit performance, and the tester is easy to operate and intelligent. The tester adopts imported embedded particle counter and imported air filter, the test result is highly accurate, which can quickly and accurately verify the tightness of respiratory protective equipment such as masks. The protective effect of the mask depends not only on the filtration efficiency of the filter material, but also on the degree of close contact with the wearer's face. In actual use, it is impossible for the edge of the mask to completely fit the face. Except for a small amount pollutants that penetrates through the filter material, most of the other pollutants leak from the fitting part of the mask and the face. Ordinary users often only pay attention to common issues such as the protection of masks against particulate matter and germs, while ignoring the individuality of whether the mask matches the user. suitable to reduce its protective effect. Therefore, the tightness is an important indicator for evaluating the protective performance of masks. GB 19083-2010 technical requirements for medical protective masks stipulates 'The design of the mask should provide good tightness, and the total fit factor of the mask should not be less than 100'. PART 01 Test methods and instrument Standard US Occupational Safety and Health Administration (OSHA) standard "Respiratory Protection" (29 CFR1910.134) GB 19083-2010 Technical requirements for medical protective masks; GB/T 18664-2002 Selection, use and maintenance of respiratory protective equipment; OSHA 29 CFR1910.134 Respiratory Protection.   The tightness of respiratory protective item such as masks is determined by a fit test. Suitability tests are divided into qualitative suitability tests and quantitative suitability tests. Qualitative suitability tests are based on the subject's perception of the test agent (saccharin, irritating smoke, etc.) to judge the results. Due to the subjectivity of its judgment, it is easy to lead to the failure of the test results. The quantitative fit test requires the aid of a mask tightness tester. The test principle of the quantitative suitability test: by using the mask tightness tester to quantitatively measure the concentration of the external testing agent of the respiratory protective equipment and the concentration of the testing agent leaking into the respiratory protective equipment during the simulated operation activities of the person wearing ...

ABSTRACT: The residue-on-evaporation method of purified water is to detect the quality of residue on evaporation solids obtained after 100 mL of purified water is evaporated and dried. The difficulty is that the operator needs to repeat the operation to achieve the 0.3mg constant weight value required by the Chinese Pharmacopoeia. The traditional test method has the shortcomings of low efficiency and manual duty. After long-term practice and repeated verification, it adopts an integrated automatic structure design, equipped with rapid water bath evaporation and gas balance technology, which can realize automatic feeding, water bath evaporation, blast drying and cooling balance, constant temperature weighing five-in-one automatic test. Through the repeatability experiment and gradient design experiment, the results show that: 2 rounds of weighing can reach a constant weight error value of 0.3mg, when the scalar amount is 9.4mg/100mL, the precision (RSD) is 0.73%, and the accuracy of the gradient design experiment is high. There is no deviation between parallel samples. Conclusion: After the innovation of the residue on evaporation detection technology of purified water, the test time to reach constant mass value is short, the operation is simple, and the data accuracy and precision are good. KEYWORDS: purified water; residue on evaporation; constantmass; automated test 01 Standard requirements According to the requirements of Chinese Pharmacopoeia 2020 Edition Part II "Purified Water": Take 100mL of this product, put it in an evaporating dish with constant weight at 105°C, evaporate it to dryness on a water bath, and dry it at 105°C to constant weight, and the remaining residue should not exceed 1mg. The Chinese Pharmacopoeia defines constant weight as constant weight, unless otherwise specified, refers to the weight of the test sample after two consecutive drying or igniting weighing the difference is less than 0.3mg; the second drying to constant weight and each subsequent weighing should be carried out after 1 hour of drying under the specified conditions. According to the requirements of European Pharmacopoeia 10.0 Edition, about “Purified water in containers“， Residue on evaporation: maximum 0.001 per cent. Evaporate 100 mL to dryness on a water-bath and dry in an oven at 100-105 °C. The residue weighs a maximum of 1 mg. The requirements of the Chinese Pharmacopoeia, the US Pharmacopoeia and the European Pharmacopoeia for limits of constant mass and residue on evaporation in purified water are shown in Table 1. It is worth noting that the US Pharmacopoeia does not require residue-on-evaporation items for purified water, the European Pharmacopoeia has no residue on evaporation testing items for Purified water in bulk, while Purified water in containers does not. For residue on evaporation testing items, the limit requirement is also ≤10mg/L, but there is no requirement for constant weight....

Summary The non-volatile matter test principle of purified water is to detect the mass of non-volatile matter solids obtained after 100mL of purified water is evaporated and dried. The difficulty is that testers need to perform repeated operations to achieve the 0.3mg constant weight value required by the Chinese Pharmacopoeia. The traditional test method has the disadvantages of low efficiency and manual on-duty. After long-term practice and repeated verification, it adopts an integrated and automated structural design, equipped with rapid water bath evaporation and gas balance technology, which can realize automatic feeding, water bath evaporation, blast drying, and cooling. Balance, constant temperature and weighing five in one fully automatic test. Through repeated experiments and gradient design experiments, the results show that: 2 rounds of weighing can reach a constant weight error of 0.3mg, and when the amount of scalar addition is 9.4mg/100mL, the precision (RSD) is 0.73%, and the accuracy of the gradient design experiment is high. There is no bias between parallel samples. Conclusion: After the innovation of the non-volatile detection technology of purified water, the constant weight time is short, the operation is simple, and the data accuracy and precision are good. Key words: purified water; non-volatile matter; constant weight; automated testing In the production of pharmaceuticals, purified water is widely used as solvents, detergents, auxiliary materials, raw materials for pure steam and water for injection, etc., from raw materials to preparations, the use of purified water runs through the entire production process. Therefore, the quality control of purified water is very important in the production management of pharmaceutical companies. The test of non-volatile matter in purified water is one of the basic inspection items. The difficulty lies in the 0.3mg constant weight value required by the Chinese Pharmacopoeia. Experimental stop condition. Traditional testing methods have disadvantages such as low efficiency, repetitive and cumbersome operations, difficulty in constant weight, and the need for manual supervision. Domestic and foreign standard requirements According to the requirements of "Purified Water" in the second part of the Chinese Pharmacopoeia 2020 edition: take 100mL of this product, put it in an evaporating dish with a constant weight at 105°C, evaporate it to dryness on a water bath, and dry it to a constant weight at 105°C. The remaining residue should not exceed 1mg. The definition of constant weight in the Chinese Pharmacopoeia is constant weight, unless otherwise specified, refers to the weight of the test sample whose weight difference is less than 0.3 mg after two consecutive dryings or igniting; the second time of drying to constant weight And every subsequent weighing should be carried out after continuing to dry for 1 hour under the specified conditions. See Table 1 for the requirements of the Chinese ...