Overview
The microbial limit test holder is a specialized laboratory device designed for use in microbial limit testing, a critical procedure in pharmaceutical and microbiological quality control. It supports membrane filtration methods to detect and quantify microbial contamination in products like drugs, cosmetics, and water. This tool is indispensable for labs adhering to international standards such as the United States Pharmacopeia (USP), European Pharmacopoeia (EP), and Japanese Pharmacopoeia (JP). Its design ensures minimal contamination risk and high reproducibility, making it a staple in quality assurance workflows.
Structure and Working Principle
The microbial limit test holder typically consists of a base, funnel, and clamping mechanism to secure the membrane filter. The funnel directs the test sample onto the filter, while the base collects the filtrate. The clamping mechanism ensures a tight seal to prevent leaks during filtration. During operation, the sample is poured into the funnel, and vacuum pressure is applied to draw the liquid through the membrane filter. Microorganisms are trapped on the filter, which is then transferred to a culture medium for incubation and enumeration. The holder's robust construction ensures consistent performance across multiple tests.
Key Features
Durability is a hallmark of microbial limit test holders, with materials like stainless steel and autoclavable plastics offering resistance to corrosion and repeated sterilization cycles. The design often includes ergonomic handles for easy assembly and disassembly. Compatibility with standard membrane filters (e.g., 47mm diameter) and vacuum filtration systems is another critical feature. Some models also include graduated markings for precise sample measurement, enhancing accuracy in testing protocols.
Application Areas
Microbial limit test holders are primarily used in pharmaceutical manufacturing to ensure products meet microbial quality standards. They are also employed in cosmetic testing, food and beverage quality control, and water purity assessments. In research labs, these holders facilitate studies on microbial contamination and antibiotic efficacy. Their versatility makes them suitable for both routine testing and specialized research applications.
Maintenance and Precautions
Proper maintenance of microbial limit test holders involves regular sterilization, typically via autoclaving at 121°C for 15-20 minutes. Inspect the holder for cracks or wear before each use to prevent contamination or leaks. Handling should be done with sterile gloves to avoid introducing external microorganisms. Store the holder in a clean, dry environment to maintain its integrity and performance over time.
B2B Procurement Guide
When purchasing microbial limit test holders, prioritize suppliers with certifications like ISO 13485 for medical devices or GMP compliance. Verify compatibility with your lab's existing filtration systems and membrane filters. Bulk orders often attract discounts, so consider negotiating prices for large quantities. Additionally, inquire about warranty and after-sales support to ensure long-term reliability. Reputable suppliers may also provide validation documents to streamline regulatory compliance.
Related Manufacturers
- 主营：[]
- 主营：医用制冰机、集菌仪、血液融浆机、微生物限度仪、实验室喷雾干燥机、氮吹仪、固相萃取装置、培养箱干燥箱、索氏提取器
- 主营：喷雾干燥机、全自动氮吹仪、一体化蒸馏仪、微生物限度检测仪、光化学反应仪、固相萃取仪、COD消解仪、石墨消解仪、索式提取器、恒温金属浴、集菌仪、拍打式均质器、恒温解冻仪、细胞分类计数器、翻转式振荡器、分液漏斗振荡器、水质硫化物酸化吹气仪
- 主营：一体化蒸馏仪、硫化物吹扫仪、二氧化硫蒸馏仪、微生物限度支架、酒精度蒸馏仪、液液萃取仪、二甲苯可溶性测定仪、水蒸气蒸馏仪、氟化物蒸馏仪、氮气发生器、光化学反应仪、氨氮蒸馏仪、挥发酚蒸馏仪
- 主营：喷雾干燥机、实验室喷雾干燥机、小型喷雾干燥机、微生物限度检测仪、离心喷雾干燥机、有机溶剂喷雾干燥机、智能一体化蒸馏仪、水蒸气蒸馏装置、实验二氧化硫蒸馏仪、冷凝回流提取仪、挥发油测定仪、氮吹仪、脂肪测定仪、固相萃取仪、水质硫化物酸化吹气仪、索式提取器
- 主营：一体化蒸馏仪、COD消解仪、挥发油测定仪、微生物限度检测仪、微生物薄膜过滤器、微生物限度检查仪、内镜微生物检测仪、微生物薄膜过滤系统、硫化物酸化吹气仪、冷凝回流提取仪、氮吹仪、液液萃取仪、索氏提取器、小型喷雾干燥机、甲苯法水分测定仪、原油含水量测定仪、降尘自动浓缩蒸干、冷水机、二氧化硫蒸馏仪、集菌仪、硫化物酸化吹气装置、硫化物酸化吹气蒸馏仪、全自动蒸馏仪、水浴回流装置
- 主营：喷雾干燥机、氮吹仪、全自动氮吹仪、微波消解仪、石墨消解仪、二氧化硫蒸馏仪、集菌仪、一体化蒸馏仪、自动液液萃取仪、光化学反应仪、固相萃取仪、索式提取器
- 主营：氮气发生器、氮吹仪、冷冻干燥机、微生物限度测试仪、高温喷雾干燥机、赶酸器、恒温摇床、恒温解冻仪、智能集菌仪、种子培养箱、固相萃取仪、水浴融浆机、干式氮吹仪、汞灯反应器、全封闭氮吹仪、圆形水浴氮吹仪
- 主营：循环器、制冰机、超声波、六联联过滤支架、恒温水箱、恒温水槽、无菌盐水、恒温油槽、恒温制冷、低温恒温槽、循环一体机、恒温水浴锅、低温冷却液、磁力搅拌恒温
- 主营：全自动液液萃取仪、移液工作站、一体化蒸馏仪系列、微波消解仪、全自动微量分液仪、氮气发生器、精馏塔系列、分子蒸馏仪、喷雾干燥机系列、三气低氧培养箱、恒温恒湿培养箱、人工气候箱、生化培养箱、电热恒温培养箱、光照培养箱、恒温摇床、二氧化碳摇床、三气培养摇床、分液漏斗振荡器、真空干燥箱、土壤干燥箱、电热鼓风干燥箱、离心机
- 主营：过氧化氢消毒、无菌隔离器、无菌检测耗材、微生物检测设备、微生物检测耗材、无菌传递舱
- 主营：光化学反应仪、蒸馏仪、萃取仪、微波消解仪、索氏提取器
- 主营：喷雾干燥机、一体化蒸馏仪、脂肪测定仪、微波消解仪、微生物限度检测仪、COD消解仪、石墨消解仪、二氧化硫蒸馏仪、固相萃取仪、细胞计数器、翻转振荡器
- 主营：集菌仪、一体化蒸馏仪、COD消解仪、微生物限度仪、微生物薄膜过滤器、微生物限度检查仪、内镜微生物检测仪、二氧化硫测定仪、挥发油测定仪、硫化物酸化吹气仪、冷凝回流提取仪、氮吹仪、索氏提取器、小型喷雾干燥机、甲苯法水分测定仪、冷水机、二氧化硫蒸馏仪、硫化物酸化吹气蒸馏仪、全自动蒸馏仪、水浴回流装置
- 主营：喷雾干燥机、氮吹仪、固相萃取仪、微波消解仪、微生物限度检测仪、一体化蒸馏仪、光化学反应仪、摇床振荡器、恒温解冻仪融浆机、脂肪测定仪、集菌仪、培养箱、干燥箱、洁净工作台、生物安全柜
- 主营：喷雾干燥机、氮吹仪、蒸馏仪、微波消解仪、微生物限度检测仪、氮气发生器、石墨消解仪、固相萃取仪、光化学反应仪、脂肪测定仪、真空平行浓缩仪、短程分子蒸馏仪、液液萃取仪、cod回流消解仪、气体发生器、定氮仪、氮气循环喷雾干燥机、冷冻干燥机、薄膜蒸发器、降膜蒸发器、精馏塔装置、恒温解冻仪、硫化物酸化吹气仪、放射性水样蒸发浓缩赶酸仪、集菌仪