Follow the same standardization steps as described in USP <788>
標(biāo)準(zhǔn)制定遵從USP <788>制定步驟
• Volume accuracy
體積
• Flow rate
流速
• Sensor resolution
傳感器靈敏度
• Calibration
校準(zhǔn)
• Count accuracy
計(jì)數(shù)
Two system controls tests are recommended
兩種系統(tǒng)控制測(cè)試
• Blank test: measure five aliquots of degassed particle-free water, the count must be less than 1 particle/mL > 10 µm.
測(cè)試:檢測(cè)脫氧純水,> 10 µm的粒子數(shù)不得超過1 個(gè)/mL
• System suitability verification; analyze the USP particle count reference standard and pass the count limits
系統(tǒng)適應(yīng)性驗(yàn)證:檢測(cè)分析USP標(biāo)準(zhǔn)粒子并低于限定值
Sample preparation
樣品準(zhǔn)備
• If there is enough volume test individual units
確認(rèn)每個(gè)樣品是否有足夠的體積
• If the volume is too small, mix units and combine the contents to obtain the required volume (typically 0.2-5.0 mL)
如果體積太小,將樣品混合直到符合測(cè)量的體積(典型0.2-5.0 mL)
• Degas the sample and gently mix again
輕輕上下晃動(dòng)混合均勻
Analysis
• Analyze four aliquots
測(cè)量4次
• Count the particles in the size range of interest, including >10 & 25 µm
測(cè)量計(jì)數(shù)規(guī)定范圍內(nèi)的粒子,包括>10 跟 >25 µm。
• Disregard the first result and average the second two
*次不計(jì),求得后面兩次的平均值
Pass/Fail criteria
If the container volume < 100 mL; less than 6000 particles/container > 10 µm and 600 particles/container > 25 µm
通過/不通過的標(biāo)準(zhǔn)范圍
如果標(biāo)示裝量< 100 mL;> 10 µm 不超過6000個(gè)/瓶,> 25 µm 不超過600個(gè)/瓶
If the container volume > 100 mL; less than 25 particles/mL > 10 µm and 3 particles/mL > 25 µm. Also not exceed the per container limits for the < 100 mL criteria above.
如果標(biāo)示裝量> 100 mL,>10 µm 不超過25個(gè)/ml,> 25 µm 不超過10個(gè)/ml
The AccuSizer FX Nano system is ideal system for performing the USP <787> test for the following reasons
AccuSizer FX Nano是測(cè)量USP <787>的*選擇。
• Passes all standardization and system suitability tests
通過所有標(biāo)準(zhǔn)粒子與系統(tǒng)適應(yīng)性測(cè)試
• Sensitivity down to 0.15 µm
靈敏度可以達(dá)到0.15 µm
• Higher concentration limit
可檢測(cè)高濃度樣品
• Accurate sample volume down to 250 µL
小測(cè)量體積為250 µL
Aggregated IgG protein before and after filtration as measured on the AccuSizer FX Nano
AccuSizer FX Nano關(guān)于聚合免疫蛋蛋白經(jīng)過濾和未過濾的檢測(cè)譜圖