How to choose a clarity tester for visible particle inspection
A clarity tester provides a controlled light level so that inspectors can check injections, infusions and other bottled liquids for visible particles. The SC-4000A from Huanghai Pharmaceutical Instruments (Shanghai, since 1978) provides up to 4,000 lx, covering the 2,000–3,750 lx range used for visual inspection under ChP 0904, USP <790>/<1790> and Ph. Eur. 2.9.20.
Model comparison
| Model | Illumination | Samples | Method chapters |
|---|---|---|---|
| SC-4000A | Up to 4,000 lx (covers 2,000–3,750 lx) | Injections, infusions, bottled liquids | ChP 0904, USP <790>/<1790>, Ph. Eur. 2.9.20 |
How to choose
- Light level: check the illumination your monograph specifies for the container and product type; the SC-4000A reaches 4,000 lx.
- Samples: designed for visual inspection of injections, infusions and bottled liquids.
- Method: the instrument controls the light; the inspection itself is visual, so pair it with trained inspectors and your defect standards.
Pharmacopoeia and compliance
ChP 0904 (visible particles), USP <790> Visible Particulates in Injections and <1790> Visual Inspection of Injections, Ph. Eur. 2.9.20 (visible particles).
Frequently asked questions
What is the SC-4000A used for?
Visual inspection of clarity and visible particles in injections, infusions and bottled liquids.
Which standards apply?
ChP 0904, USP <790> / <1790> and Ph. Eur. 2.9.20. Its 4,000 lx illumination covers the 2,000–3,750 lx range used for visible-particle inspection.
Why does illumination matter?
Pharmacopoeias specify the light level for visual inspection so that particles are seen consistently between inspectors and laboratories.
Is the SC-4000A for liquids or films?
It is a visual inspection instrument for liquid products: injections, infusions and other bottled liquids.
Related guides: All pharmaceutical testing instruments