Resistance Chart

I found a cool site with a fabric resistance chart:

Fiber	Tensile Strength	Abrasion Resistance	Chemical Resistance		Deg F		Deg C		PH
			Acid	Alkali	Cont.	Surge	Cont.	Surge
Polypropylene	Excellent	Good	Excellent	Excellent	190	190	90	90	2-12
Polyester	Excellent	Excellent	Good	Fair	275	325	135	150	2-7
Nylon	Excellent	Excellent	Poor	Excellent	200	250	90	120	2-8
Polyethylene	Good	Very Good	Excellent	Excellent	122	176	50	80	2-12
Cotton	Good	Average	Poor	Excellent	180	225	80	105	3-10
Nomex	Very Good	Very Good	Fair	Good	400	425	200	215	2-12
Teflon	Fair	Good	Excellent	Excellent	450	500	230	260	Any

NOTE: This table is only a general guide.  Operating temperature, chemical concentrations and mechanical conditions all have a pronounced effect on service life.

Fixing a sticky situation

There are a lot of things to take into consideration when you are choosing a filter, but maple syrup was never on that came to mind.

I was reading a slightly entertaining case study provided by Micropure Filtration called Fixing a Sticky Situation, of course I thought it was just a play on words, but in fact they had a situation where maple syrup was clogging up their filters long before they should have. And here's the unexpected part, they weren't filtering the syrup. It was the air that had the syrup in it.

According to this particular case study, the client used maple syrup in their recipe, but when the syrup was heated some of the stickiness was released into the air, then when the tanks were emptied the filters were clogging up with the sticky air. 

They were able to solve the problem by switching out the PTFE media which absorbed the syrup with a different material that would not absorb any of the maple syrup. They decided on FMS media which is made of the high quality woven stainless steel and comes in many different micron levels and does not absorb maple syrup!

Read the article here: Fixing a sticky situation

Attapulgite Clay Storage

I've been running across a lot of information on attapulgite clay and the proper storage of said clay. Clays are hydroscopic, so it is important to store them in a climate controlled environment.  Clay should be packaged in a way that ensures the clay does not absorb moisture during transit or during short storage periods.

For on-site inventory, it's recommended to limit storage to 6 months for standard products and three months for specialty low moisture clays. Also try not to freeze and thaw the clay.

Care should be taken not to store the clay next to chemicals giving off evaporating compounds, as the clay readily absorbs certain vapors.

ATTAPULGITE CLAY STORAGE

how to rinse with less water!

We all know it's common to find three out of four tanks devoted to rinsing.  This  step is necessary to:

• Stop any action of a chemical solution.
• Prevent the contamination of a subsequent process.
• Prevent chemical staining of the work.

Good rinsing with small amounts of water has always the goal, but in today's regulation dominated world.  Reducing water lessens the load on waste treatment systems and makes recovery more practical. 

The purpose of counter-flowing rinses is just to conserve water.  By increasing from one to two rinses, you can same 20 to 100 times the water.

If you want to learn more about Rinsing with Less Water read this article >>