il faut mettre un trait de jaige sur le pycnomètre pour indiquer le niveau du volume du pycnomètre
供应商回复:
We sincerely apologize for the inconvenience you met. We highly value your feedback and have reported the issue to our technical team for improvement.
Thank you for giving us the chance to learn and grow. We hope to serve you again with better products — we supply all kinds of testing instruments and lab devices.
12 Nov 2025