bad solder?

[Maudibe]

Hi Guys - regarding the future low temp, fast flow stuff I sell, here is the reply from the manufacturer received today.... got to love the bit about "sweaty musicians" 

Steve

The Future HF is a great Halide Free product for use with the 63/37 and should flow well for all but the most tarnished work, It is not that great for the Lead Free wires this usually require a Halide Activated wire like our Autosol range, our latest Autosol product is RM10 a 1% Halide Activated product to help with the reduction in flow seen with Lead Free. I like the Halide Free technology because it offers reassurance of reliability by ensuring no corrosive/conductivity issues that can be present if the Halide activated products are partially cleaned (breaking the resin encapsulation) then exposed to humid environments such as sweaty musicians.