Glass 25mm Residual Chlorine Cuvette, 20ml, Standard 80, Two-way Light, No Cap, 1pc/ea, C252CS

Weight	100 g

SKU: C252CS

C252CS Glass 25mm Two-Way Light Residual Chlorine Cuvette 20ml Standard 80

Original price was: $19.00.Current price is: $18.00.

In Stock

Glass 25mm residual chlorine cuvette, 20ml, Standard 80 (>80% transmittance). Two-Way Light. No Cap. 350–2000 nm. SKU: C252CS.

In Stock

SKU: C252CS Categories: Cuvettes, Products, Quartz Colorimetric Cuvettes

Worldwide Timed Dispatch Available

Worldwide delivery to door service, hassle free shipping
Contact us for quotation of bulk purchase discount
Custom design. Send us graphic drawing for solution
POs for Academics. Pay after delivery.
Standard cuvettes ship in 3-5 days. Custom items 1-2 weeks.

Description

The C252CS is a glass residual chlorine cuvette with 25mm path length and two-way light optical configuration — two opposing faces are polished to optical grade for standard absorbance measurements. With a 20ml internal volume (25 × 12 × 68 mm chamber), this large-format cell is purpose-built for residual chlorine (DPD) colorimetric testing in water treatment, environmental monitoring, and municipal water-quality laboratories. The 25 mm path length provides enhanced sensitivity for low-concentration analytes. Fabricated using Standard 80 (>80% transmittance) — precision-glued glass panels for reliable optical alignment. The open-top design (no cap) allows quick sample loading and easy cleaning between measurements.

Technical Specifications — Residual Chlorine Cuvette
Material	Optical Glass	SKU	C252CS
Path Length	25mm	Internal Volume	20ml
Optical Windows	2 (Two-Way Light)	Fabrication	Standard 80
Transmittance	>80%	Wavelength	350–2000 nm
Exterior Dimensions	29 × 16 × 70 mm	Interior Dimensions	25 × 12 × 68 mm
Closure	Open Top (No Cap)	Package	1pc/ea

Colorimetric & Water Quality Applications

◆ Residual Chlorine (DPD) — free and total chlorine determination in drinking water, swimming pools, and wastewater

◆ Turbidity & Color — Hazen/APHA color index, Pt-Co color, and apparent-color measurements

◆ Nessler Reagent Tests — ammonia and ammonium determination in environmental water samples

◆ Heavy-Metal Colorimetry — iron, manganese, chromium, and copper detection via colorimetric reagents

◆ COD / BOD Analysis — chemical and biological oxygen demand in wastewater monitoring

◆ Phosphate & Nitrate — nutrient analysis in surface water, groundwater, and agricultural runoff

◆ Food Safety — pesticide residues, preservative levels, and additive quantification by colorimetric methods

◆ Clinical Chemistry — enzymatic assays, metabolite quantification, and diagnostic colorimetric tests

Why Two-Way Light?

Two-way light cuvettes have two opposing faces polished to optical grade, providing a single well-defined beam path for standard absorbance measurements. This is the standard configuration for UV-Vis spectrophotometers and colorimeters, delivering clean baseline performance and maximum signal-to-noise ratio for quantitative colorimetric analysis.

Why Open Top?

The open-top design (no cap) allows quick sample loading and easy cleaning between measurements. PTFE is chemically inert and will not leach absorbing compounds into the sample. While not airtight, the cap reduces evaporation during short measurement cycles and protects the optical surfaces when the cuvette is stored.

Why Optical Glass?

Optical glass provides excellent transmittance across the visible and near-infrared spectrum (350–2000 nm), making it the ideal choice for colorimetric applications where measurements are performed in the visible wavelength range (400–700 nm). Glass cuvettes offer a cost-effective alternative to quartz when UV measurements below 350 nm are not required. The material is chemically resistant to aqueous solutions, dilute acids, and common colorimetric reagents, ensuring reliable long-term performance in routine water-quality and analytical testing.

Why Standard 80?

Standard 80 uses precision-applied optical adhesive to bond glass panels, delivering >80% transmittance from 350–2000 nm. The glued construction provides excellent optical alignment at an economical price point. Ideal for routine water-quality testing where the sample matrix is aqueous and the reagents (DPD, Nessler, etc.) are compatible with glued joints.

Usage Tips

Rinse with a compatible solvent (e.g., deionized water or the measurement solvent) before first use to remove any residual particles.
Do not use abrasive materials or brushes on the polished optical faces — wipe gently with lens tissue.
Compatible with aqueous solutions only — avoid organic solvents, strong acids, and strong bases.
Not suitable for UV measurements below 350 nm — use a quartz cuvette for deep-UV applications.
Store in the original protective case to prevent scratches on the optical windows.
For baseline correction, fill with your reference solvent and run a blank before sample measurements.

Custom Orders
Need a non-standard path length, volume, window configuration, or closure type? We manufacture cuvettes to your exact specifications. Request a custom quote.

Disclaimer: Specifications are nominal values measured under standard laboratory conditions. Actual transmittance may vary slightly with wavelength and sample conditions. Images are representative; minor cosmetic variations between production batches are normal and do not affect optical performance.