I have just started a project where I need to measure the osmotic pressure of samples. I do not have experience of doing this previously but was bought an old osmometer (Advanced Instruments 3320) to help. However, when it arrived, it did not come with any of the required accessories i.e. the sampler. Just looking online, these seem very expensive (much more expensive than the machine was) to replace, and the consumables to go with the machine also appear very expensive. Has anyone used one of these before and has any tips on where to source parts or materials? Are there non-branded alternatives to the consumables that work effectively?