Various classification methods and selection guides for environmental test chambers

When you bring up the environmental test chamber, first understand the "environment" and "test box". The "environment" consists of many environmental conditions, which refers to the sum of the external conditions that the sample to be tested is subjected to at a specific time. It can be mechanical or climatic. Biological, as well as other effects due to chemically active substances and mechanically active substances.
The “test box” is defined as “a part of the enclosure or space that can meet the specified test conditions” to simulate the environmental factor parameters and the corresponding severity of the test. The “environmental test” proves that the sample to be tested is intact under normal conditions and is functioning properly by simulating real (natural) environmental conditions or by reproducing its influence.
When the book bag is hanged, it is common to say that the environmental test box means that the laboratory environment is not the normal atmospheric environment conditions, or the environment does not meet the environmental conditions required for the sample inspection, and it is necessary to manually build or simulate a test environment condition. Enclosed space for testing purposes. Laboratory tests generally use environmental test chambers to simulate the environmental conditions required for each test.
One of the most important test items is the climate test. At the same time, or in sequence, such as high temperature, low temperature, high humidity, low humidity, light, and even alternating heat and humidity cycles, the environmental test chamber is also called artificial climate chamber and environmental test box. , constant temperature and humidity box, high temperature and high humidity box, high and low temperature alternating box. The main areas involved are reliability testing of electronic components, stability investigation of chemical and new energy materials, design and manufacture of automobiles and spare parts, production and packaging of semiconductor wafers, and stability of pharmaceuticals (chemicals, Chinese medicines and biopharmaceuticals). Research, cosmetic and food microbiological testing, and third-party testing.
In addition, environmental test chambers have different names in different application areas and standards. In the field of life testing and reliability investigation, it will be called aging box; in the pharmaceutical industry, it will be called stability test box or light incubator; in agriculture and animal husbandry, it will be called light incubator or plant cultivation growth box; When special environmental conditions such as high temperature and high humidity are tolerated, it may be necessary to examine the degree of long bacteria and the influence of long bacteria on the performance of the equipment. This may also be called a long bacteria test chamber.
Memmert offers a full range of environmental test chambers for different application areas. The main types of environmental test chambers are:
1. Semiconductor heating and cooling series test chamber HPP: ?? Using thermoelectric effect, using high-efficiency semiconductor for temperature control, energy saving and high efficiency; 2 Simultaneously with the dynamic humidity control system, it is very water-saving humidification and dehumidification, no need for wastewater collection and discharge system; With up to eight models and sizes, it can meet a variety of applications with different throughputs. 4 It can perform data management and ensure data reliability. It has a wide market base and application in the pharmaceutical related and testing industries.
Especially for the application of protein crystal culture, relatively stable and stable environmental conditions are required. The low-noise and almost vibration-free semiconductor constant temperature and humidity chamber without compressor configuration is the best choice.
2, compressor refrigeration series test chamber ICH, Memmert provides a series of constant temperature and humidity boxes that use compressor refrigeration, the performance is still stable;
3, focus on the HCP series in the high temperature and high humidity field, not equipped with refrigeration system, especially suitable for applications above room temperature, such as the double eight five (85 ° C / 85% RH) test in the reliability environment test (as shown below) Highlights in the upper right corner area);
4, the all-round environmental test chamber CTC, wide coverage. It can conduct constant temperature and humidity and high and low temperature high and low humidity alternating cycle testing in a wide range of -42 to 190 ° C and 10 to 98% RH. It has unique advantages in the electronics industry and chemical testing.
5. For very low temperature and low humidity applications, Memmert has also introduced a corresponding solution, as shown in the red area of ​​the figure, which can maintain temperature and humidity stability as low as 10 ° C / 10% RH.
When choosing an environmental test box, in addition to understanding the glamorous appearance (name), you should pay more attention to the agile soul (internal needs), and refine the related technologies according to the standard specifications and operational procedures to be followed in different demand areas. Conditions, make the optimal configuration and solution to suit it.
references:
GB/T 2421.1-2008/ IEC60068-1 Environmental Test Overview and Guide for Electrical and Electronic Products
GB/T 20159.8-2008 Environmental conditions classification Environmental conditions classification and environmental testing relationship and conversion guide Introduction
GB/T 20159.1-2006 Relationship between environmental condition classification and environmental test and conversion guide storage
GB T 4797.1-2018 Environmental conditions classification Natural environmental conditions Temperature and humidity
GB/T 4796-2017/ IEC 60721-1 environmental conditions classification environmental parameters and their severity
GB/T 2423.16-2008 Environmental testing for electric and electronic products - Part 2: Test methods Test J and guide:
GB/T 32065.9-2019 Environmental testing methods for marine instruments - Part 9:
GB/T 2424.1-2015 Environmental testing Part 3 Low temperature and high temperature
GBT 2424.5-2006 Environmental testing of electrical and electronic products Temperature test chamber performance verification IDT IEC60068-3-5
The Chinese Pharmacopoeia 2015 Edition Part IV 9001 Guidelines for the Stability Testing of APIs and Preparations
JJF1101-2003 Environmental test equipment temperature and humidity calibration specification
Stability test of ICHQ1a new drug substance and its preparation
ICHQ1b New drug substance and its preparation photostability test

Catheters

Bladder catheters are often used in postoperative patient treatment or a balloon catheter can also be used in a care facility for micturition disturbances. It often comes into use in postoperative care in hospitals, urology practices and care facilities.


Yingmed offers a wide selection of disposable catheters with different materials from PVC catheter and Latex foley catheter to All silicone. None, single or double balloon, Single way, 2-way and 3-way, you will find your ideal catherter according to the use and physical structure of female and male. All of the Bladder catheters are packed with individual sterilized PE bag or paper bag.


Balloon catheters are securely fitted with an inflatable balloon in the bladder. The balloon volume of the catheter is chosen based on the anatomical circumstances so as to prevent unwanted sliding out.

As transurethral catheterization is an invasive operation. It`s application must be weighed against the risk of urinary tract infections. Operators must make sure the operation is under a sterile environment. Combined with catheterization, Yingmed also offers a large assortment of consumable disinfect and isolation products like Cotton ball, Gauze swab, Non-woven fenestrated drapes, Surgical gloves, Disposable plastic forceps. You will find them in our category of Wound Dressing. If you were not able to find the correct product, simply contact with us and we will attempt to help.

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