West Tune 100-1000μL Single-Channel Pipettor High-Accurate Pipettor Adjustable Variable Half Autoclavable Volume Micropipette for Laboratory

Saw this on Health Ranger Report and got one so I don't ever have to guess on the amounts I'm using anymore.

All 4 of these larger micropipettes broke within days of being used - one on the very first use. Even the one that looks ok in the picture I reassembled, but it now leaks. Please refund them

Nope. Back to the seller with this one. I knew it was cheap but the 100-1000ul is more than a ml off at any volume. I'd pass on this one if you want any semblence of constancy in your readings.