some way of telling if there's any sealant actually left inside the tyre.
There's this, but it's a very expensive syringe O_o
http://road.cc/content/review/176166-milkit-tubeless-valve-and-refill-kit
Until something gets clogged. The problem with milkit is the lack or replaceable valve cores. I still have not found the need for the milkit valves in my own bikes.
@cycleclinic started
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There's this, but it's a very expensive syringe O_o
http://road.cc/content/review/176166-milkit-tubeless-valve-and-refill-kit