1. Ungasebenzisi izinsimbi ezilimele

2, lapho uphakamisa, ungasonti, ukugoqa

3, ungavumeli ifindo lokugqekeza

4, ukugwema ukudabula i-commissure yokuthunga noma umsebenzi ogcwele ngokweqile

5, lapho uhambisa ama-rigging, ungayidonsi

6, ukugwema umthwalo oqinile noma oshaqisayo

7, umshini ngamunye kufanele uhlolwe ngaphambi kokusetshenziswa ngakunye

I-8, I-Polyester imelana ne-inorganic acid, kodwa isengozini kuma-organic acid

9. I-Polypropylene ilungele ukusetshenziswa ezindaweni ezimelana kakhulu namakhemikhali

10, inayiloni inamandla okumelana nama-acids angaphili, asengozini yokulimala kwe-organic acid

11. Uma inayiloni imanzi, ingalahlekelwa kufika ku-15%