Quartz 10mm Standard Cuvette, 3.5ml, Sintered 83, Two-way Light, PTFE Cap, C102CM

Weight	30 g

SKU: C102CM

C102CM 10mm Quartz Two-way Light Standard Cuvette, 3.5ml, Sintered 83

Original price was: $31.00.Current price is: $28.00.

In Stock

Quartz 10 mm standard cuvette for absorbance spectroscopy (190–2500 nm). 3.5ml volume, Sintered 83 (>83%). two-way light, ptfe cap. SKU: C102CM

In Stock

SKU: C102CM Categories: Cuvettes, Products, Quartz Standard Cuvettes Brand: MachinedQuartz

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Description

The C102CM is a quartz (fused silica) 10 mm standard-path cuvette built for UV-Vis and NIR spectrophotometry across 190–2500 nm. The two-window configuration — two opposing polished optical faces with two frosted sides — is the canonical geometry for absorbance measurements using Beer–Lambert calculations. Frosted faces eliminate internal reflections and lateral stray light, which keeps the baseline flat even at the low-absorbance limit (A < 0.05).

This SKU uses Sintered 83 fabrication — high-purity synthetic quartz fused at ~600 °C without adhesive. That gives you >83% transmittance at 200 nm, meeting the threshold required by USP <857> and Ph. Eur. 2.2.25 photometric methods. For a side-by-side comparison against the four other quartz tiers we offer (Standard 80, Sintered 80, Molded 83, Molded 0.01), see our cuvette models comparison. Includes a PTFE cap for chemically resistant sealing.

The C102CM in a typical UV-Vis beam path. The 10 mm internal width = optical path length. The 12.5 mm exterior fits standard cuvette holders worldwide. Z = 15 mm matches the international beam-center standard.

Technical Specifications
Material	Quartz (Fused Silica)	SKU	C102CM
Type	Standard Cuvette	Path Length	10 mm
Volume	3.5ml	Optical Windows	Two-way Light
Fabrication	Sintered 83	Transmittance	>83%
Wavelength	190–2500 nm	Cap	PTFE Cap
Exterior Dimensions	12.5 × 12.5 × 45 mm	Interior Dimensions	10 × 10 × 43 mm
Package	1pc/ea

Applications & Methods

Pharmaceutical dissolution & assay (USP <711>, <857>) — The >83% T at 200 nm makes this SKU compliant for active-ingredient quantification methods that scan into the deep UV. The 10 mm path is the default for USP method validation.

Protein quantification at 280 nm — A standard 10 mm cell with high deep-UV throughput gives accurate A₂₈₀ readings for proteins in the 0.05–2.0 mg/mL range without dilution corrections. See our path length guide for sub-micro options.

UV-Vis absorbance & Beer–Lambert calibration — 10 mm path means A = ε·c·L computes directly without correction factors. Sintered bond stays inert across all common organic and aqueous solvents.

Environmental water analysis (COD, nitrate, phosphate) — Routine EPA-style absorbance methods at 220–600 nm. Cuvette can be cleaned with dilute HNO₃ between samples without seam degradation.

Enzyme kinetics & reaction monitoring — Frosted side walls suppress reflection artefacts during continuous time-course scans. Pair with a thermostated holder for kinetics at 25–60 °C.

Teaching & routine UV-Vis — A reliable workhorse for undergraduate instructional labs and routine QC; handles thousands of measurement cycles without optical degradation when cleaned per protocol.

C102CM vs Hellma 100-QS & Starna Type 1

Specification	MachinedQuartz C102CM	Hellma 100-QS	Starna Type 1 / 1-Q-10
Path length	10 mm	10 mm	10 mm
Exterior dim.	12.5 × 12.5 × 45 mm	12.5 × 12.5 × 45 mm	12.5 × 12.5 × 45 mm
Volume	3.5 mL	3.5 mL	3.5 mL
Quartz grade	Sintered 83 (high-purity synthetic)	Suprasil® synthetic	Spectrosil® synthetic
T @ 200 nm	>83%	>80%	>80%
Wavelength range	190–2500 nm	200–2500 nm	200–2500 nm
USP <857> compliant	Yes	Yes	Yes
Lead time (US)	In stock	2–4 weeks	2–4 weeks
Typical price	$28 (this SKU)	~$95	~$80

Hellma® and Starna® are registered trademarks of their respective owners. Pricing references public US distributor list pricing as of 2026; lead times reflect typical end-customer experience. C102CM matches or exceeds the optical specifications of these reference products at significantly reduced cost and lead time.

Why Sintered 83 over Standard 80 or Sintered 80?

MachinedQuartz fabricates four cuvette tiers differentiated by bond construction and quartz purity. Standard 80 uses UV-cured optical adhesive — cheapest, fine for room-temperature aqueous samples but fails above 100 °C and dissolves in organic solvents. Sintered 80 swaps the glue for a powder-fusion seam at ~600 °C, giving full chemical resistance and 600 °C operating limit at modest cost increase. Sintered 83 (this SKU) keeps the seamless build but upgrades to high-purity synthetic quartz, raising deep-UV transmission from ~80% to >83% at 200 nm — the threshold pharma QC and protein-quantification methods specify. Molded 83 is a one-piece monolithic cell with no seams at all, rated to 1200 °C for OEM and process applications. For your method, pick the lowest tier that clears both your thermal/chemical envelope and your deep-UV transmission requirement. Our model comparison walks through each tier with a decision tree.

Why This Cuvette?

The two-way light configuration (two polished optical faces, two frosted sides) provides clean absorbance measurements with minimal stray light. The frosted faces reduce internal reflections and scattering, improving baseline stability and signal-to-noise ratio — particularly important for low-absorbance measurements near the detection limit. The standard 10 mm path length provides direct Beer-Lambert law compliance (A = εlc), making concentration calculations straightforward without correction factors.

Usage Tips: Handle the cuvette by its frosted (non-optical) sides to avoid fingerprints on the polished windows. Fill to at least 15 mm above the beam center height to avoid meniscus effects in the light path. Clean with spectroscopic-grade solvent and lint-free tissue after each use. For aqueous samples, rinse with deionized water first, then solvent. Avoid prolonged ultrasonic cleaning which can stress the optical bonds over time. Store upright in the original case when not in use. Compatible with Shimadzu, Agilent, PerkinElmer, Thermo Fisher, JASCO, and most commercial UV-Vis spectrophotometers with standard 12.5 mm cuvette holders.

Custom Orders & Academic Purchasing: Need a custom size, path length, or window configuration? We manufacture made-to-order cuvettes tailored to your specifications. Academic institutions: we accept Purchase Orders (POs) with pay-after-delivery terms. Contact us for quotes and custom requests.

Verified Buyers

Used this cuvette in a published method?

We compile real-method use cases for our SKUs to help future buyers verify suitability. If you’ve used the C102CM in a publication, validation report, or QC procedure, we’d love to add your reference (with permission and attribution). Email info@machinedquartz.com with the citation.

Submit usage citation →

Frequently Asked Questions

Is the C102CM compatible with my Hellma 100-QS or Starna Type 1 holder?

Yes. The C102CM has the same external dimensions (12.5 × 12.5 × 45 mm) and 10 mm internal path length as the Hellma 100-QS and Starna Type 1 standard cuvettes, so it drops directly into any cuvette holder designed for these references — Shimadzu UV-1900, Agilent Cary, PerkinElmer Lambda, Thermo Genesys, JASCO V-series. The Z dimension (beam-center height of 15 mm) is the international standard.

Why choose Sintered 83 over Standard 80 for this path length?

Sintered 83 has no organic adhesive at the joints — the quartz pieces are powder-fused at 600 °C — so it survives organic solvents (acetone, DMSO, methanol) and temperatures up to 600 °C. Standard 80 uses UV-cured glue that fails above 100 °C and dissolves in solvents. The 83% transmittance at 200 nm also meets USP <857> and Ph. Eur. 2.2.25 method validation requirements that Standard 80’s ~80% does not.

How do I clean a quartz cuvette without scratching the optical windows?

Rinse immediately after use with the same solvent used in your measurement, then flush 2–3 times with deionized water followed by spectroscopy-grade ethanol or acetone. Air-dry inverted on lint-free tissue or use dry nitrogen gas. For stubborn residue, soak in 1–5% nitric acid for 15–30 minutes. Never wipe optical windows with paper tissue (causes permanent scratching) and never use HF (etches quartz). Sintered 83 cells are safe for ultrasonic cleaning, unlike adhesive-bonded Standard 80.

Does this cuvette work for fluorescence measurements?

No. The C102CM is a 2-window cuvette (two polished optical faces, two frosted sides), built for absorbance / UV-Vis spectrophotometry. Fluorescence requires a 4-window cell with all four sides polished so excitation and emission can travel perpendicular paths. For fluorescence, see our 4-window variants such as the C104CM (10 mm 4-way cuvette, same Sintered 83 grade).

Disclaimer: This product is intended for laboratory and research use only. It is not designed, approved, or intended for use in medical diagnostics, therapeutic procedures, or any clinical application involving human or animal subjects. The buyer assumes all responsibility for determining the suitability of this product for their specific application.