ITEM NAME:4Pcs 3.5ml 10mm Cuvette Cell Spectrometer Micro Optical Quartz Cuvettes with Lid 4pcs 3.5ml Optical Quartz Cuvettes 10mm Cuvette Cell Spectrometer with Lid SPECIFICATIONS.(Material: Fused quartz & PTFE. Lid Color: White. 2) PTFE cover, high quality fused quartz body, no bubbles, no impurities. Cell Color: Clear & Matte translucent. 2) Color may vary slightly due to the color setting of each individual monitor.