Mare milk testing kit to predict foaling.
I've used these kits since 2011 and found them very reliable.
The kits work by testing the mares milk as she gets close to foaling. Once the milk reaches the 95% reading, then foaling is likely within 12 hours.... it's worked for me every time and has saved me many sleepless nights and helped me be there for my mares foaling. Last year, I would probably have lost 2 foals had I not been there. None of my mares have ever suffered any detriment by taking the very small amount of milk needed to do the test (only half a ml).
The full kit contains: 25 testing strips valid for 2 years, milk collection pot, 2 syringes, 2 test tubes and full instructions. All that's needed in addition is distilled/deionised water, available at most large supermarkets from £1.
Postage to UK is £3.50. Europe is £4.50.