(SQ1-ALL) Square One Cuvette Holder, 3 Collimators, 1-cm Path, 2 Filter Holders, Integrated Cover, 200-2000 nm

Ocean OpticsSKU: SQ1-ALL


The SQUARE ONE cuvette holder is designed to hold 1 cm pathlength cuvettes securely for performing optical measurements.

Download the Square One Product Sheet.

Included with each holder are three collimating lenses with fiber optic couplings, integrated mirror to optimize signal reflection, built in cover to block ambient light and two filter holders that accept both 12.5 and 25 mm diameter filters. When used with Ocean Insight spectrometers and light sources, SQUARE ONE is ideal to measure absorbance, fluorescence, scattering or any combination of these optical phenomena.

Versatile design – configure holder for absorbance or fluorescence measurements

Dual filters – allows light to be filtered entering and/or exiting the cuvette holder

Integrated cover protects photosensitive samples

Fiber optic  couples via SMA 905 connectors

Optical design  collimating lenses with adjustable focus

Collimating Lenses Three 74-UV fused silica lenses (200-2000 nm) One of 74-UV fused silica lens (200-2000 nm) Two 74-UV f/2 fused silica lenses (200-2000 nm) Two 74-UV f/2 fused silica lenses (200-2000 nm) Two 74-UV f/2 fused silica lenses (200-2000 nm)
Filter Slot Specification Two slots in total. Each slot accepts one 12.5 mm and 25 mm diameter filters. Accepts filters up to 6.35 mm (1/4”) thickness Accepts filters up to 6.35 mm (1/4”) thickness Accepts filters up to 6.35 mm (1/4”) thickness No
Pathlength 1 cm Up to 150 mm thick (solids)
Up to 150 mm pathlength (cuvettes)
1 cm 1 cm 10 cm 1 cm to 10 cm (adjustable)
Z Dimension Specification 15 mm 15 mm 15 mm 15 mm 15 mm 15 mm
Connector SMA 905 SMA 905 SMA 905 SMA 905 SMA 905
Base Material Black anodized aluminum
Base Measurement Guide Scored at 1 mm segments
150 mm total length
Dimensions 111 mm x 90 mm x 74 mm 200 x 67 x 157 57 mm x 61 mm x 29 mm overall 58 mm x 140 mm x 38 mm 97 mm x 147 mm x 40 mm 200 mm x 67 mm x 70 mm 150 mm x 50 mm x 50 mm
Integrated Light Source No No No No No No No
Light Source Mount Diameter 9.52 mm (3/8”)
Reflection Mirrors Two (2) of UV-enhanced
Mounting Bars Material Black anodized aluminum
Mounting Bars Positioning Four 3/8-24 threaded holes
Mounting Bars Threading Accepts lenses with 3/8-24 threads
Uses M6 setscrews for adjusting the bars
Water Input Fittings for
Temperature Regulation
No 3.175 mm (1/8”) NPT 3.175 mm (1/8”) NPT No
Weight 618 g 1 kg 80 g 230 g 540 g 726 g 490 g

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