15:- To check Hemoglobin
Aim:- To check hemoglobin.
* Rate of HB in blood :- Hemoglobin is present in red blood cells. This work as taking Co2 away from the heart.
While checking hemoglobin required chemicals are HCL, Distle water, Cotton Spirit, etc.
In test-tube put N10 about 20 ml, Apply spirit to the place from where blood will be taken. Then with help of lancet prick to the finger where spirit is applied. Take blood about 0.02 ml in test-tube put it in testing pipe. Mix it for about 5 minutes and then rate in colour change transfer it in test- tube and take reading of hemoglobin.
Hemoglobin decreases causes:- Decrease in blood pressure / tiredness 
To maintain hemoglobin :- Jaggery, Groundnuts, Beetroot, Carrot, Tomato,
                                                         Fig, can maintain Hemoglobin.