" New This laboratory 10 piece cleaning brush set is made of nylon and it is used for cleaning dirty glassware. Use it to scrape the inner walls of your beakers, funnels, test tubes and various other pi
" New This laboratory 10 piece cleaning brush set is made of nylon and it is used for cleaning dirty glassware. Use it to scrape the inner walls of your beakers, funnels, test tubes and various other pi