Still have niter after filtering

[HudsonHawk]

We're small time producers, just under 100 taps. We don't sell. That out of the way, I run the syrup through a Leader prefilter coming out of our home made evaporator into a stainless pot. After heating up to around 190 I pour it through 3-4 prefilters and a synthetic filter under those. All filters have been rinsed in warm water and gently squeezed (not wrung) to get rid of excess water. I then heat to 211 and check density. If ok, I bottle. Always done this, always worked. This year however, I get cloudiness in the syrup that I was thinking was nitre. After the bottles sit for a number of hours the cloudiness settles to the bottom 1/2 inch. I just rinsed a prefilter with water at the sink, and squeezed out the excess water into a glass and it is VERY cloudy. Any ideas?

[western mainer]

1st you can't bring it back up over 190 -200 or it will start bringing out the sugar sands again you were lucky in the past.
Brian

[ecolbeck]

You are filtering and then reheating to 211? If so, that's what's causing the problem. Filtered syrup should not be heated past 190 (?). Here is an alternate procedure:

1. Evaporate to finished density (or close). Filter as it comes off the evaporator
2. Check density and adjust.
3. Reheat
4. Filter
5. Bottle immediately. Ensure that temp remains above 180 for bottling.

[Chickenman]

Did you inadvertently flip the filters? Mark each one as top side and always run same side up.

[BSHC]

you need a temperature compensation chart or Murphy cup so you dont have to get to 211 for the Hydrometer!

[HudsonHawk]

Thanks for the answers guys.... I see what's happening....

[DaveG1]

I'm getting sand in my filtered syrup. I use a hydrometer to test density, then cool to 190 and filter through pre-filters and a synthetic cone filter. I then heat back up to 185 on the stove top and bottle into mason jars i heat in the oven to 185. What am I doing wrong?

[Bricklayer]

I’ve found in the past that using direct heat like a stove top to heat syrup will bring nitre back. You could try slowly bringing the syrup to temp on a really low setting. That might cut down the nitre. On my water jacketed bottler it takes over 2 hours to heat up a full batch ( 10 gallons) to 180-185 F. I could possibly turn it up higher. But I like to be safe.