The Chinese Pharmacopoeia (2000 edition) defines purified water as "pharmaceutical-grade water produced through distillation, ion exchange, reverse osmosis, or other appropriate methods." This definition marks a significant advancement in pharmaceutical water production technology in our country, as it expands beyond traditional distillation processes. The Pharmacopoeia also specifies that water for injection is derived from distilled purified water. Similarly, the U.S. Pharmacopeia (USP) has consistently acknowledged reverse osmosis (RO) as a legitimate method for producing injection water across its seven editions, underscoring growing trust in membrane-based technologies. The use of membrane separation techniques in pharmaceutical water production is now seen as an essential and forward-looking trend.
Currently, most domestic and international pharmaceutical firms employ ion exchange, reverse osmosis, or combined systems to create purified water, followed by distillation to generate injection water. While ion exchange remains a popular choice for deep salt removal, it generates substantial waste acids and alkalis during regeneration, posing environmental concerns. Reverse osmosis membranes excel at removing bacteria, pyrogens, viruses, and organic matter, achieving nearly 100% efficiency. However, when raw water salinity is high, even secondary reverse osmosis may fail to meet conductivity standards. Medical-grade pure water demands exceptionally high-quality standards, often requiring resistivity values exceeding 15 megohms. To ensure the safety of this ultra-pure water, treatment systems are constructed entirely from stainless steel, and sterilization units are installed before the dispensing points. Recognizing these stringent requirements, our company employs advanced techniques like reverse osmosis and EDI to tailor comprehensive high-purity water treatment solutions that cater to the diverse needs of pharmaceutical plants and hospitals.
The primary processes for water purification equipment generally include:
1. Raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → reverse osmosis unit → intermediate water tank → intermediate water pump → ion exchanger → purified water tank → pure water pump → UV sterilizer → microporous filter → water dispensing point.
2. Raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → reverse osmosis → pH adjuster → intermediate water tank → second-stage reverse osmosis (reverse osmosis membrane surface positively charged) → purified water tank → pure water pump → UV sterilizer → microporous filter → water dispensing point.
3. Raw water → raw water booster pump → multi-media filter → activated carbon filter → water softener → precision filter → reverse osmosis machine → intermediate water tank → intermediate water pump → EDI system → purified water tank → pure water pump → UV sterilizer → microporous filter → water dispensing point.
Comparatively, these three purification processes are widely adopted in the electronics industry. Their variations typically stem from different combinations of the aforementioned fundamental processes. Below are the pros and cons of each approach:
1. Ion exchange resin offers low initial investment and compact installation but necessitates frequent regeneration, consuming large amounts of acid and alkali, thus harming the environment.
2. Reverse osmosis serves as pre-treatment with ion exchange equipment. While the initial cost exceeds ion exchange resin methods, ion regeneration cycles are extended, reducing acid and alkali usage. However, environmental impact persists.
3. Reverse osmosis pre-treatment coupled with an electric deionization (EDI) device represents the most economical and eco-friendly method for producing ultra-pure water. It allows continuous operation without acid/alkali regeneration, preserving environmental integrity. Nevertheless, its initial investment far exceeds the previous two methods.
Huaibei Yuanyi Water Purification Technology Co., Ltd. specializes in manufacturing and operating industrial water treatment equipment, including single-stage and double-stage reverse osmosis systems, deionized water equipment, desalination systems, direct drinking water systems, natural mineral water equipment, ultra-pure water systems, high-purity water systems, EDI electrodialysis systems, pharmaceutical purification water equipment, barrel and bottle water plant machinery, bucket brushing and capping machines, bottle cap sterilizers, air showers, air purifiers, purification workbenches, lamp inspection boxes, laboratory equipment, QS-certified equipment, and water treatment chemical scale inhibitors. Our commitment to innovation ensures we deliver top-tier solutions tailored to various client needs.
Constant Temperature And Humidity Test Chamber
An environmental test chamber artificially replicates conditions which machinery, materials, devices or components might be exposed to. It is also used to accelerate the effects of exposure to the environment, sometimes at conditions not actually expected.
Chamber testing involves testing and exposing products to various environmental conditions in a controlled setting. Climatic Chamber testing and Thermal Shock testing are part of chamber testing. Climatic Chamber testing is a broad category of ways to simulate climate or excessive ambient conditions exposure for a product or a material under laboratory-controlled yet accelerated conditions. On the other hand, Thermal Shock testing is used to simulate how materials will react when exposed to changes in extreme climatic conditions, such as going from extremely cold to extremely hot conditions in a very short period of time (usually only few seconds).
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Dongguan Best Instrument Technology Co., Ltd , https://www.best-tester.com