What should you check for on the glassware before beginning vacuum filtration?

Before beginning vacuum filtration, it is crucial to check for cracks or defects in the glassware. This ensures that the glassware is in good condition and capable of withstanding the vacuum pressure that will be applied during the filtration process. Any cracks or defects can compromise the integrity of the glassware, potentially leading to breakage. This could result not only in the loss of the sample being filtered but also create a safety hazard due to broken glass and exposure to chemicals or biological materials. Ensuring the glassware is free from imperfections is a vital step in maintaining safety and obtaining reliable results in the laboratory.