... , the outer stopper can be fixed on 150mm. Certificate: CE,FDA ESR tube is specially used for determination of the erythrocyte ... : Sorfa or OEM.2. International quality approvals: CE, ISO9001, ISO13485, FDA ect. 3. Material: PS/PE/PET/Glass.4. Additive: 3 ... 3.8% sodium citratePE100pcs/box, 1000pcs/ctn ESR Pipette with FDA,CE,ISO