Please order  the book "Practical Ondévit: Questions and Answers" for answers on the above topics:

A. The test technique
B. Ondévit cards
C. The number of cards tested
D. The number of flasks and drops
E. Ondévit products are indispensable
F. The jewelry and medicine test
G. The second test
H. The empty vial test
I. The results of the test
J. The reactions to the test and the products
K. Salt water
L. Standard products
M. The complex products
N. The conservation of products
O. The pregnant woman
P. The animal test