Yinhuang Technology QA-82A Pharmaceutical Solution Color Inspection Umbrella Lamp

Overview

The Yinhuang Technology QA-82A Pharmaceutical Solution Color Inspection Umbrella Lamp is a purpose-built visual assessment instrument engineered for standardized qualitative and semi-quantitative evaluation of solution color in compliance with the Chinese Pharmacopoeia (ChP) General Chapter 0901 — “Solution Color Test”. This method relies on human observer comparison of test solutions against certified reference standards under controlled, spectrally stable illumination. The QA-82A implements a daylight-simulating COB (Chip-on-Board) LED light source with a tightly regulated correlated color temperature of 6500 K — matching the CIE standard illuminant D65 — ensuring spectral fidelity critical for consistent color discrimination. Unlike broadband fluorescent or halogen sources, the COB LED architecture delivers uniform luminance across its planar emission surface, minimizing glare, shadowing, and angular dependency during side-by-side visual comparison. The lamp’s umbrella-style optical enclosure provides diffused, directionally neutral illumination—eliminating specular reflections and enabling reliable assessment of transparent to slightly hazy liquid samples placed in standardized Nessler tubes or matched glass cylinders.

Key Features

• COB LED daylight source (6500 K CCT) with <0.5% spatial non-uniformity across 200 mm diameter inspection zone
• Stepless, digitally calibrated illuminance control from 0 to 5000 lx — traceable to NIM (National Institute of Metrology, China) standards
• Stainless steel housing with electropolished finish ensures corrosion resistance, cleanability, and compatibility with ISO 14644-1 Class 7/8 cleanroom environments
• Ergonomic vertical column design supports dual-tube viewing at optimal eye level (120 cm working height), reducing operator fatigue during high-volume QC workflows
• Integrated thermal management system maintains LED junction temperature within ±2°C over 8-hour continuous operation, guaranteeing photometric stability per IEC 62471
• No UV emission (<365 nm) — eliminates risk of photochemical degradation during prolonged sample exposure

Sample Compatibility & Compliance

The QA-82A is validated for use with all ChP-specified standard color solutions (e.g., B1–B12 series, Y1–Y6, R1–R6, G1–G6) and corresponding Nessler tubes (10 mm, 25 mm, and 50 mm path lengths). It supports both single-tube and comparative dual-tube configurations per ChP 0901 methodology. Instrument performance conforms to national metrological verification regulation JJG 1039–2008 (“Verification Regulation for Color Comparison Lamps”) and satisfies functional requirements outlined in USP <631> “Color” and EP 2.2.2 “Colour of liquids”, though formal certification under those pharmacopoeial frameworks requires user-level qualification (IQ/OQ/PQ). The device is routinely deployed in GLP-compliant laboratories undergoing CFDA (now NMPA) audits and meets foundational environmental controls required for Annex 11-aligned visual inspection processes.

Software & Data Management

As a dedicated visual inspection tool, the QA-82A operates without embedded software or digital data output — intentionally preserving the pharmacopoeial requirement for human-perceived color matching. However, it integrates seamlessly into broader QC documentation systems via standardized observation log templates compatible with electronic laboratory notebooks (ELN) and LIMS platforms. Illuminance calibration records, maintenance logs, and daily verification checks (using NIST-traceable photometer and reference gray scale cards) are maintained per ALCOA+ principles. Optional accessories include a calibrated lux meter adapter port and a removable anti-static acrylic shield for electrostatic-sensitive environments.

Applications

• Pharmaceutical QC: Visual color grading of injectables, oral solutions, APIs, excipients, and sterile filtration validation samples
• Food & Beverage: Assessment of syrups, vinegar, fruit juices, brewing wort, and edible oils per GB 5009.35–2023
• Environmental Monitoring: Turbidity-independent color evaluation of surface water, wastewater effluents, and potable water per HJ 505–2009
• Veterinary & Feed: Raw material purity screening (e.g., glycerol, ethanol, propylene glycol) and biological product consistency checks
• Academic Research: Teaching labs for pharmaceutical analysis courses; method development for chromaticity correlation studies using CIELAB ΔE*ab metrics

FAQ

Does the QA-82A comply with USP or EP requirements for color testing?

It meets the photometric and geometric specifications referenced in USP <631> and EP 2.2.2 but requires site-specific operational qualification to demonstrate equivalence in user workflows.
Can it be used for quantitative color measurement (e.g., APHA, Pt-Co, Gardner)?

No — it is strictly a qualitative/semi-quantitative visual comparator. For numerical color indices, a spectrophotometer compliant with ASTM D1209 or ISO 6271 is required.
Is routine calibration mandatory, and how often should it be performed?

Yes — illuminance uniformity and CCT stability must be verified daily before use; full calibration against accredited standards is recommended every 6 months or per internal SOP.
What tube types are supported, and where can certified reference standards be sourced?

Standard 10/25/50 mm Nessler tubes (borosilicate, Class A) are compatible; ChP-certified color standards are supplied by National Institutes for Food and Drug Control (NIFDC) or authorized distributors.
Does the unit support 220 V / 50 Hz only, or is multi-voltage operation available?

Standard configuration is 220 V ±10%, 50 Hz; custom 100–240 V auto-ranging power supply modules are available upon request for global deployment.