Customer Question Answers – Pure Process Technology

Replacing columns for a solvent purification system.I am a graduate student at Baylor University who has been put in charge of maintaining our solvent purification system. This system looks nearly identical to the pictures posted on your website. I have a few questions: 1. Can you replace the desiccant in our columns if we ship them to you? if so how much does this cost? 2. Can we buy desiccant and refill the columns ourselves? We will buy it from you guys if the answer is yes. 3. Is it possible to reactivate the desiccant in a column if it becomes saturated with water but has not lost any structural integrity? 4. We can easily bypass the columns on our system by attaching the keg directly to the dispensing bulbs but have been too timid to put this into practice. Are there any problems associated with transferring dry solvent to the keg and using our system to dispense it? I would greatly appreciate if someone answers any of these questions or refer me to somewhere that I can search for the information. -Thank You, Josh.

February 26, 2019 logistics 0 Comments

Hi Josh, Thanks for reaching out, yes, we can take care of your columns. If you send them back we can refill and activate them – cost is $750.00 per solvent (two columns) plus $845.00 if you need an ISO columns (small columns at the top of the valve plate. We only use those for […]

From A US solar energy company headquartered in Redwood City, California. I’m Interested in a 3-5 solvent drying cabinet mount system. (I only have 43″ of width available.) Questions: (1) We have high purity house N2. Can this be used in place of Ar? (2) What are the ventilation requirements for these systems? Please advise. -Thanks, DR

February 23, 2019 logistics 0 Comments

Thanks for contacting us. To answer your questions, yes you can use High Purity N2 in place of Ar as long as it’s from a liquid source (blow off from a dewar or liquid tank). If you’re all set with that then we could fit a five solvent system inside 43″, I attached a drawing […]

We have been using PPT SPS for around 5 years and it performs really well. It consists of six solvents including Pentane and recently we noticed an issue with the pentane line. Solvent (pentane) does not come out even if the keg is full. Only less than 50 ml can be collected at a time. We are not sure whether the problem is with the column or the line. We would be grateful if you could provide us some assistance in this matter. The filter is clean. Pentane column has never been replaced before.

logistics 0 Comments

Thank you for contacting PPT concerning your solvent question. You can try a few things. First, I would need to know what pressure the Argon Gas is set to? Ideally, you want that between 8-12psi, I recommend running the system at 10psi. You can also try removing the flask and using a beaker. Place it […]

Our lab has a glass contour solvent system and four solvents purification systems inside (THF/ Tetrahydrofuran, toluene, dichloromethane, and DMF/ Dimethylformamide). 1. We have used this system for 5 years and just wonder if it is necessary to change the columns? 2. We do not know how long the columns can be used to dry solvents normally. Does PPT carry replacement columns that will fit our solvent system? 3. Also, we normally fill the solvent kegs with anhydrous solvents for best system performance, but is it possible to fill the kegs with lower grade solvents?

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PPT’s response to the question about this 4-column system: We recommend changing columns after 4-5 years; typically, that’s the life span of columns for a lab with average use. The other way is to test for water with a Karl Fisher Titrator but most labs do not have access to those. Yes, our columnsfit both glass […]

I am writing to you in regards to a SPS system installed in the Department of Drug Design and Pharmacology at University of Copenhagen. As far as I know, the system was installed in 2011 and it’s been running on originally supplied columns since then. 1. I would like to ask whether the columns should be replaced with new ones? We don’t have easy access to KF titration to measure the water content. Estimated amounts of solvents that passed through the columns since 2011 are: THF-150 liters; DCM-170 liters and DM-130 liters 2. Please also indicate if there is a local representative, we can get in touch with in order to purchase new columns and reservoirs?

February 16, 2019 logistics 0 Comments

PPT’s response to this 2-part question about the system installed in 2011: Generally, we recommend changing columns every four to five years but based on your usage above you have not used a lot of solvents. On a volume basis, the capacity ranges between 600 – 800 liters of capacity. I would say you are […]

We have a Glass Contour solvent system and are planning to move it into another location as part of a building process. Our hope is that we can disconnect the solvent kegs, close the valves for the columns, and move the system in one piece to make the setup process as simple as possible. I wanted to check to see whether there are any special considerations we should note as we plan for this move.

logistics 0 Comments

The easiest way would be to strap the Solvent Cabinet up to the frame lifting it off the floor. Use casters under each leg of the frame to roll it to its new location. This way you do not have to disconnect anything, we’ve done this many times and can lend you the casters if […]

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