Fruit mash must be tested for sugar content before being sold to the distillery so that the customer can be given a clear indication of these parameters. This can typically be done with a refractometer, quickly and economically
Screw caps on liquor bottles must be leak-proof, easy to open and securely resealed. That is why they are subject to spot checks. This is an important check for quality assurance, i.e. to detect any faulty batches and thus avoid complaints.
