721型可見分光光度計

721型可見分光光度計

二、產品特點：

1、數字顯示測量數值

2、自動光門，自動調零調百儀器校正

3、采用鎢燈，保證儀器的使用壽命

4、寬大的樣品室，zu（i）大可放置10cm的比色皿

5、選配輸出端口RS232，可實現連接打印機和連接電腦功能

三、技術參數對比：

型號                                  VIS-721                           VIS-722                           VIS-722(N.S)

光學系統消色差                   Czerny-Turner (1200L/mm grating)

波長范圍                      350-1020nm                  320-1020nm                       320-1020nm

波長準確度                         ±2nm                              ±2nm                                  ±2nm

光譜帶寬                                6nm                               5nm                                     4nm

波長重復性                          ≤1nm                              ≤1nm                                   ≤1nm

雜散光                        ≤0.1%T @360nm         ≤0.05%T@360nm            ≤0.05%T@360nm

光度準確性                         0.5%T                              0.3%T                                   0.3%T

光度重復性                         0.2%T                              0.2%T                                   0.2%T

漂移                                   ≤0.2%T                            ≤0.1%T                                 ≤0.1%T

噪聲                                   ≤0.3%T                            ≤0.2%T                                 ≤0.2%T

穩定性                        ±0.004A/h @500nm       ±0.004A/h @500nm          ±0.003A/h @500nm

工作方式                            T、A、C                           T、A、C                                T、A、C

調零方式                               自動                                   自動                                         自動

波長驅動方式                     手動波長                          手動波長                                  手動波長

打印接口                               選配                                   選配                                           選配

能量（燈源）                     進口鎢燈                           進口鎢燈                                  進口鎢燈

凈重                                         8kg                                    8kg                                            8kg

軟件支持                                   否                                      否                                               否