Lovibond AF335 USP Colour Comparator — product documents
Official English PDF documents for the listed product models, covering features, technical specifications and configuration information.
View resource →Product overview
AF335 is a complete kit for grading pharmaceutical solutions to USP 631, with four stable glass discs covering USP A–T and 40 mm cells.
Key features
- An integrated prism brings the sample and comparison fields together for colour discrimination; ultrasonic sealing protects the optics.
- Calibrated glass standards represent discrete, colour-stable grades for direct sample matching.
- Four USP discs cover A–T; 40 mm cells graduated at 20 ml are used for visual colour grading.
- The supplied Daylight unit provides consistent illumination and reduces the influence of changes in ambient lighting.
Models and part numbers
| Part number | Model | Range / purpose |
|---|---|---|
| 433350 | AF335 | USP A–T colour scale |
Technical specifications
| Measurement system | Two-field visual comparison |
|---|---|
| Range / object | USP A–T; 40 mm path length |
| Applicable standards | USP 631 |
| Colour type | Transparent |
| Portability | Portable |
Colour-disc scale values
| Part number | Disc | Scale values (USP) |
|---|---|---|
| 246600 | 4/66A | A, B, C, D, E |
| 246610 | 4/66B | F, G, H, I, J |
| 246620 | 4/66C | K, L, M, N, O |
| 246630 | 4/66D | P, Q, R, S, T |
Standard delivery
- Comparator 2000+ and Daylight 2000+
- 4/66A A–E, 4/66B F–J, 4/66C K–O and 4/66D P–T USP discs
- Two W680.OG.40 mm cells calibrated at 20 ml
Applications
For USP colour control of pharmaceutical raw materials, process samples and finished solutions.