I just started using a Vinemetrica SC100A to measure SO2. I have a question on using transfer pipettes to obtain the 25mL sample for titration. I understand that the transfer pipettes come in a sealed sterile package. Are these pipettes intended to be used only once – or can they be sterilized and reused? If so – what is the recommended process for cleaning and/or sterilization? I usually sanitize anything that comes into contact with my wine with Starsan. If I clean the transfer pipette with Starsan and then use it to obtain a 25mL wine sample for titration – will it impact the SO2 results? How are others sanitizing or sterilizing transfer pipettes? Thanks!