| abstract |
The utility model provides a total nitrogen digestion device of phosphorus, this utility model discloses a set up the three-layer colour comparison tube pipe support to set up the rectangle recess that is used for placing the memo in the pipe support of the superiors, and set up on the pipe support top and taken cotton blotter lid, can realize easily fixing the colour comparison tube and mark, prevent the splash and can promote the efficiency of sample pretreatment and avoid the sample to clear up the process of putting into and taking out before and after by a wide margin and cause the technological effect of numbering mistake, easily use widely. |