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Home / Cuvettes / Screw Cap Cuvettes / Cuvette Caps
Accessories

Cuvette Caps

PTFE screw caps (M10 thread) for the 10 mm quartz screw cap cuvette. Sold per piece as optional accessories — solid lid with PTFE septum for full chemical resistance, or solid / injectable lid with silicone septum for soft sealing and syringe access. All caps are fully sealed for anaerobic and volatile-sample experiments.

Replacement Cuvette Caps & PTFE Lids

Keep your cuvettes sealed and your samples protected with Scuvette's cuvette caps. Our PTFE-thread caps fit M10 and M12 screw cap cuvettes and provide a leak-resistant seal for volatile, anaerobic and high-temperature experiments. Caps are sold individually so you can replace lost or worn closures without buying a new cell.

Pair these caps with our screw cap cuvettes for a complete sealed-cell solution. Need a different thread size or material? Contact us — we offer OEM caps and custom sealing solutions.

Compatible with: 10 mm quartz screw cap cuvettes, two-way (standard M10 and large M12 including EU version and seat design) plus round-bottom two-way (standard M10, cap height 50mm), round-bottom four-way (standard M10 and large M12), flat-bottom four-way (standard M10), square-bottom five-way (standard M10), square-bottom four-way EU version (large M12) and seat-design five-way (large M12), 3.5 mL, fully sealed — Japanese imported JGS1 fused silica, optical contact one-piece molding.
View Screw Cap Cuvettes
Screw Cap Cuvettes
Screw Cap Cuvettes
12 products
10 mm path fully sealed quartz screw cap cuvettes with M10 / M12 PTFE thread — ideal for anaerobic and volatile-sample experiments.
Screw Cap Cuvette Detail
Screw Cap Cuvette Detail
$91.00 / box (1 pc)
Two-way 3.5 mL sealed cuvette with optical contact one-piece molding, >83% transmittance, 200–2500 nm. Sold singly, 1 pc per box.
Round Bottom 4-Port
Round Bottom 4-Port
$155.00 / box (1 pc)
Round bottom four-way 3.5 mL sealed cuvette for UV-Vis and fluorescence spectrophotometry. Sold singly, 1 pc per box.
Flat Bottom 4-Port
Flat Bottom 4-Port
$162.00 / box (1 pc)
Flat bottom four-way 3.5 mL sealed cuvette for UV-Vis and fluorescence spectrophotometry. Sold singly, 1 pc per box.
Square Bottom 5-Port
Square Bottom 5-Port
$210.00 / box (1 pc)
Square bottom five-way 3.5 mL sealed cuvette for UV-Vis and fluorescence spectrophotometry. Sold singly, 1 pc per box.
Large Screw Cap Two-Way
Large Screw Cap Two-Way
$185.00 / box (1 pc)
Large M12 screw cap two-way (flat bottom) 3.5 mL sealed cuvette for UV-Vis and fluorescence spectrophotometry. Sold singly, 1 pc per box.
Large Round Bottom Two-Way
Large Round Bottom Two-Way
$128.00 / box (1 pc)
Large M12 screw cap two-way (round bottom) 3.5 mL sealed cuvette for UV-Vis and fluorescence spectrophotometry. Sold singly, 1 pc per box.
Large Round Bottom Two-Way EU
Large Round Bottom Two-Way EU
$171.00 / box (1 pc)
EU version large M12 screw cap two-way (round bottom) 3.5 mL sealed cuvette — optical contact one-piece molding. Sold singly, 1 pc per box.
Large Seat Design Two-Way
Large Seat Design Two-Way
$214.00 / box (1 pc)
Large M12 screw cap two-way (seat design) 3.5 mL sealed cuvette, overall height with cap 56mm. Sold singly, 1 pc per box.
Large Seat Design 5-Port
Large Seat Design 5-Port
$380.00 / box (1 pc)
Large M12 screw cap five-way (seat design) 3.5 mL sealed cuvette, overall height with cap 56mm. Sold singly, 1 pc per box.
Round Bottom Two-Way
Round Bottom Two-Way
$130.00 / box (1 pc)
M10 screw cap two-way (round bottom) 3.5 mL sealed cuvette, overall height with cap 50mm. Sold singly, 1 pc per box.
Large Round Bottom 4-Port
Large Round Bottom 4-Port
$160.00 / box (1 pc)
Large M12 screw cap four-way (round bottom) 3.5 mL sealed cuvette for UV-Vis and fluorescence spectrophotometry. Sold singly, 1 pc per box.
Large Square Bottom 4-Port EU
Large Square Bottom 4-Port EU
$210.00 / box (1 pc)
EU version large M12 screw cap four-way (square bottom) 3.5 mL sealed cuvette — optical contact one-piece molding, comparable to German original imports. Sold singly, 1 pc per box.

Cuvette Caps & Lids — Frequently Asked Questions

What are cuvette caps and lids for?

PTFE (Teflon) screw caps and snap lids seal the cell to prevent evaporation, contamination and spills during long scans or heating. 10 mm cuvette with cap.

Which cap fits which cuvette?

M10/M12 threaded caps fit screw-cap cuvettes; open-top cells take snap lids. Check the thread size on your cell. Screw cap cuvette range.

Are PTFE caps solvent-resistant?

Yes — PTFE resists virtually all laboratory solvents and dilute acids except hydrofluoric acid, and seals the quartz body without swelling, keeping samples pure.

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