{"id":57095,"date":"2025-07-01T18:31:06","date_gmt":"2025-07-01T10:31:06","guid":{"rendered":"https:\/\/machinedquartz.com\/claude\/product\/quartz-20mm-large-capacity-large-area-optical-sample-cell-35ml-sintered-83-two-way-light-ptfe-cap-1pc-ea-c202cr2\/"},"modified":"2026-03-27T08:49:38","modified_gmt":"2026-03-27T00:49:38","slug":"quartz-20mm-large-capacity-large-area-optical-sample-cell-35ml-sintered-83-two-way-light-ptfe-cap-1pc-ea-c202cr2","status":"publish","type":"product","link":"https:\/\/machinedquartz.com\/claude\/product\/quartz-20mm-large-capacity-large-area-optical-sample-cell-35ml-sintered-83-two-way-light-ptfe-cap-1pc-ea-c202cr2\/","title":{"rendered":"Quartz 20mm Large-Capacity Large-Area \nOptical Sample Cell, 35ml, Sintered 83, Two-way Light, No Cap, 1pc\/ea, C202CR2"},"content":{"rendered":"
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The C202CR2 is a quartz large-capacity large-area optical sample cell<\/strong> with 20mm path length<\/strong> and two-way light<\/strong> optical configuration — two opposite vertical faces are polished to optical grade, forming the standard transmission geometry for UV-Vis absorbance measurements. With a 35ml<\/strong> internal volume (43 \u00d7 20 \u00d7 50 mm chamber), the cell is compatible with most commercial spectrophotometers. Fabricated using Sintered 83<\/a> (>83% transmittance) — high-temperature sintered to fuse quartz panels without adhesive. Showcases an oversized rectangular cuvette body (43mm x 20mm x 50mm, 47mm wide x 52mm tall) with massive 35ml capacity, featuring the ‘Q’ marking and open-top design for large-volume optical measurements.<\/p>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n
Technical Specifications — Large-Capacity Large-Area Optical Sample Cell<\/th>\n<\/tr>\n<\/thead>\n
Material<\/td>\nQuartz<\/td>\nSKU<\/td>\nC202CR2<\/td>\n<\/tr>\n
Path Length<\/td>\n20mm<\/strong><\/td>\nInternal Volume<\/td>\n35ml<\/strong><\/td>\n<\/tr>\n
Optical Windows<\/td>\n2 (Two-Way Light)<\/td>\nFabrication<\/td>\nSintered 83<\/a><\/td>\n<\/tr>\n
Transmittance<\/td>\n>83%<\/td>\nWavelength<\/td>\n190–2500 nm<\/td>\n<\/tr>\n
Exterior Dimensions<\/td>\n47 × 24 × 54 mm<\/td>\nInterior Dimensions<\/td>\n43 × 20 × 50 mm<\/td>\n<\/tr>\n
Closure<\/td>\nOpen Top (No Cap)<\/td>\nPackage<\/td>\n1pc\/ea<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Spectroscopy Applications<\/h3>\n
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◆<\/span> UV-Vis Absorbance Spectroscopy<\/strong> — quantitative concentration, kinetics, Beer–Lambert studies<\/div>\n
◆<\/span> DNA \/ RNA Quantification<\/strong> — nucleic-acid purity checks at 260\/280 nm<\/div>\n
◆<\/span> Protein Assays<\/strong> — Bradford, BCA, Lowry, and direct A280 measurements<\/div>\n
◆<\/span> Enzyme Kinetics<\/strong> — real-time substrate conversion and inhibition studies<\/div>\n
◆<\/span> Water Quality & Environmental<\/strong> — COD, nitrate, phosphate, heavy-metal colorimetric tests<\/div>\n
◆<\/span> Pharmaceutical QC<\/strong> — dissolution testing, drug concentration, stability monitoring<\/div>\n
◆<\/span> Chemical Reaction Monitoring<\/strong> — reaction progress tracking via absorbance changes<\/div>\n
◆<\/span> Teaching & Student Labs<\/strong> — durable quartz cells for undergraduate spectroscopy courses<\/div>\n<\/div>\n

Why Two-Way Light?<\/h3>\n

Two-way light cuvettes have two opposite vertical faces polished to optical grade, forming the standard transmission geometry for UV-Vis absorbance measurements. The remaining two faces are frosted to minimize stray-light interference, providing clean baseline performance for quantitative spectrophotometry.<\/p>\n

Why Open Top?<\/h3>\n

This cuvette features an open-top design without a cap or cover, providing unrestricted access to the sample chamber for easy filling, mixing, and cleaning. The open design is ideal for workflows requiring frequent sample changes, titration experiments, or when using dip probes and fiber-optic accessories that need direct access to the liquid surface.<\/p>\n

Why Sintered 83?<\/h3>\n

Sintered 83 uses high-temperature sintering to fuse quartz panels without adhesive, delivering >83% UV transmittance from 200–2500 nm. The sintered joints are chemically inert and compatible with strong acids, bases, and most organic solvents (excluding HF and aggressive organics such as toluene and acetone). This fabrication is ideal for analytical workflows involving harsh chemical matrices where standard glued cells would degrade.<\/p>\n

\nUsage Tips<\/strong><\/p>\n