Olga is right. Parafilm works. Not sure how much they are selling for 9 pounds there, but you can also check ebay. Parafilm is a major staple in biochemistry laboratories. I suspect the technicians are liberating surplus from the boffins.
Location: Pyrenees Mountains, South of France
posted 2 years ago
For £9.00 you get 90 ft = approx 300 grafts. You also get to support Martin Crawford and the Agroforestry Research Trust.
Love is the only resource that grows the more you use it.