COLO.Science · Spectroscopy & Color · Non-contact colour measurement
CN4560 Non-contact Benchtop Spectrophotometer — 45/0 on a height-adjustable stand
The CN4560 non-contact benchtop spectrophotometer (COLO product code PRO7916) measures colour without touching the sample. The measuring head on a stand works 7.5 mm above the surface with 45/0 geometry — 45° ring-shaped illumination and 0° viewing — so liquids in open containers, pastes, sauces, powders and wet or sensitive surfaces up to 150 mm high are measured as they are.
Which model?
Overview
Place the sample on the base, bring the head to 7.5 mm above it manually or automatically and the camera shows the measured spot on the screen. The measuring height can be stored, so a series of samples is measured at the same distance. In quality-control mode every sample shows ΔL, Δa, Δb, ΔE, whiteness and pass/fail against the standard.

Key characteristics
- Non-contact 45/0 measurement at 7.5 mm from the sample
- Concave grating and 256-pixel dual-array CMOS sensor, 400–700 nm in 10 nm steps
- Full-spectrum LED and UV light source, also for fluorescent samples
- Ø20 mm aperture; samples up to 150 mm high
- Height adjustment: manual or automatic; measuring height can be stored
- 7″ touch screen, camera positioning, USB, Bluetooth
Suitable for
- Sauces, juices, creams, pastes and other liquids in open containers
- Powders and granules: spices, flour, pigments, plastic granules
- Wet, soft, sticky or freshly coated surfaces; foods and cosmetics
- Laboratory and R&D colour control in food, cosmetics, plastics, paints, inks and ceramics
Why non-contact
Many samples cannot be pressed against a measuring port: sauces and creams smear it, powders do not form a flat surface and fresh coatings would be damaged. The CN4560 keeps a fixed distance above the sample, so nothing touches the product and the port stays clean. 45/0 geometry gives colour as the eye sees it.
On the instrument
Technical specifications
Optics and performance
| Geometry | 45/0 (45° ring-shaped illumination, 0° viewing) |
| Standards | CIE No.15, ISO 7724-1, ASTM E1164, DIN 5033 Part 7 |
| Measurement | Non-contact, sample at 7.5 mm |
| Light source | Full-spectrum LED and UV |
| Optics | Concave grating, 256-pixel dual-array CMOS image sensor |
| Wavelength range | 400–700 nm, 10 nm output |
| Reflectance range | 0–200 % |
| Aperture | Ø20 mm (smaller on request) |
| Sample height · adjustment | 0–150 mm · manual or automatic |
| Repeatability | ΔE*ab 0.05; spectral reflectance SD within 0.08 % |
| Inter-instrument agreement | ΔE*ab 0.2 (12 BCRA Series II tiles) |
Colour data and general
| Colour spaces | CIE Lab, XYZ, Yxy, LCh, CIE LUV, Hunter Lab |
| Colour difference | ΔE*ab, ΔE*uv, ΔE*94, ΔE*cmc (2:1 and 1:1), ΔE*00, ΔE (Hunter) |
| Indices | Whiteness WI, yellowness YI, metamerism index, staining and colour fastness, colour strength, opacity |
| Observer | 2° and 10° |
| Illuminants | D65, A, C, D50, D55, D75, F1–F12 (incl. CWF, DLF, TPL5, TL84, TL83/U30) |
| Measuring time | approx. 1.5 s |
| Measurement modes | Sample, quality control, continuous statistics; single or average 2–99 |
| Display · positioning | 7″ TFT capacitive touch screen · camera |
| Interface · storage | USB, Bluetooth · 40 000 + 10 000 records |
| Power · light source life | DC 24 V / 3 A adapter · 5 years, more than 3 million measurements |
| Dimensions · weight | 330 × 250 × 370 mm · approx. 10 kg |
| Operating environment | 0–40 °C, 0–85 % RH, non-condensing |
Measuring and data
The head is moved on the stand to 7.5 mm above the sample (manually or automatically); the camera shows the measured spot. Results are kept on the instrument (40 000 records in sample and QC mode, 10 000 in continuous statistics) and transferred by USB or Bluetooth.
Which model in the series?
All models measure without contact, at 7.5 mm from the sample, with 45/0 geometry, concave-grating optics, 400–700 nm and a 7″ touch screen. They differ in how the sample is presented and in the options:
| CN4560 | CN4520 | CN4668 | |
| Version | Benchtop with stand | Benchtop with stand | Measuring head for lines and fixtures |
| Geometry · distance | 45/0 · 7.5 mm | 45/0 · 7.5 mm | 45/0 · 7.5 mm |
| Light source | LED + UV | LED | LED + UV |
| Sample height | 0–150 mm | 0–150 mm | not limited |
| Height adjustment | manual + automatic | manual | set at installation |
| Measuring time | ≈ 1.5 s | ≈ 1.5 s | from ≈ 0.2 s |
| Repeatability ΔE*ab | 0.05 | 0.05 | 0.03 |
| Inter-instrument ΔE*ab | 0.2 | 0.25 | 0.2 |
| Interface | USB, Bluetooth | USB | USB, Bluetooth 5.0 |
- CN4560 — laboratory and R&D: fluorescent samples (UV), series measured at a stored height with automatic adjustment, data over Bluetooth.
- CN4520 — the basic laboratory model: the same stand and 45/0 optics without UV, with manual height adjustment and USB.
- CN4668 — production: a compact measuring head built above a conveyor, filling line or fixture, with a fast measuring cycle.
Standard delivery
- CN4560 with measuring head, height-adjustable stand and 7″ touch screen
- Standard white calibration board and black calibration cavity
- Power adapter DC 24 V / 3 A, USB cable, user guide
The delivered configuration for a specific order is the one confirmed in the COLO.Science quotation.
Knowledge base
New to colour measurement? Light sources, metamerism, CIE Lab, ΔE and measuring geometries (45/0 and d/8) are explained on COLO.Science, our knowledge base.
Selection guide
- Liquids, pastes, powders or sensitive surfaces measured without contact: the CN series — see the comparison above.
- Reflectance and transmittance on the bench, SCI/SCE, haze: the CS60 benchtop series.
- 45/0 measurement with a hand-held instrument: the CS45 portable series.
- Powders with a contact instrument: portable spectrophotometers with a powder test box, for example the CS70 series.
Configuration notice
This page is provided for orientation and product selection. Sample type, installation, aperture and the colour data you report are confirmed with the official COLO.Science quotation.
Sales and support for international customers
COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.



