A method for any sample

A few standard methods will digest larger masses or organics, according to their level of difficulty.
In addition, the EasyCONTROL software allows the chemist to create customized methods.

START MOD, the microwave kjeldhal

The comparison below refers to various agriculture products.
METHOD	START MOD	KJELDHAL
SAMPLE WEIGHT	7-9 grams	7-9 grams
CATALYST	Not needed	7 g of (2,37 g CuSO4 x 5H2O + 150 g Na2SO4)
REAGENTS	16 ml H2SO4 96% and 30 ml H2O2	20 ml H2SO4 96% and 8 ml H2O2 30%
TEMPERATURE	235°C	390°C
TOTAL TIME	1 hour and 15 minutes	4-5 hours

Results for apple samples (all data in mg/100 g).
METHOD	START MOD	KJELDHAL
N	43,1 ± 1,6	43,9 ± 1,5
Ca	6,01 ± 0,34	6,65 ± 0,67
Mg	6,62 ± 0,30	6,58 ± 0,53
P	10,2 ± 0,3	10,6 ± 0,7