probly rain, but could be bad its getting to that time of year. to me i would throw it out just on principal, because i look at it like its not worth spoiling 280 gals of good clean sap with 1.5 of bad or dirty sap. but others have interesting methods also of testing, lets see what they say...........
2x6 leader WSE with AUF, hood,preheater
waterguy RO
leader 16 gal custom water jacketed canner
10 in short stack wes fab filter press
540 taps on tubing with vac & always adding
2- benders running 25" hg from GAST vac pumps
few stainless bulk tanks
1978 chevy 1 ton 4x4 dually
IH T340 dozer with 6-way blade