Standard cell with stopper: 1. Outside: H x W x D mm From 45x12.5x7.5 to 45x12.5x102.5 2. Path Length mm: From 5mm to 100mm 3. Inside Width between two unpolished faces: always be 10mm 4. Volume from 1.70ml to 35.0ml Other details are same with Standard cell, but for the cover, it is Teflon Stopper to keep the moisture inside the cell. According to its material and transmission, there are three grades: 1. UV Grade Silica 2. Infra-red Grade Silica 3. Optical Glass Regarding the transmission curves, please note that the measurements were taken using empty cells. We also can print the logo according to our customer?s design or draft. Welcome you inquiry us for more details.