Quick operation burette according to Dr. Schilling

                                     size                                        bottlevolume in ml

820/05                    5ml:1/20                            500

820/10                    10ml:1/20                         500

820/15                    15ml:1/10                         500

820/25                    25ml:1/10                         1000

820/50                    50ml:1/10                         1000

Qty=1