hey tom,
Instead of assuming what NB Oler cares about try contacting them. Their team has been SOLID AS HELL, especially compared to others in this industry. MY guess is that they are a little busy running a business and didn’t see or chose not to respond on this forum. I can attest to their work and their customer service if you contact them directly, it is my opinion that they are not deserving of being lumped in with B&W and summit…
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How are you able to get so much vapor production on a 20L flask to get 80L/hr of recovery?
Aren’t you limited to the surface area, vacuum and temp you can achieve. So it’s either your delta t non existent, bath temp is really high (not typical temps), you have high vacuum. Looks like the distance to the condenser was shortened as well.
Could be a combination of a few.
Interested to see what parameters the roto is ran at to get 80L/hr.
@spdking
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Surface area is dependent on roto speed. Higher the speed = more surface area. Key word is “feeding” not batch. He is operating the roto off of only two process variables. controlling vacuum and feed rate. This is how continual feed rotos are ran. Minus feed rate for batch application.
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Before you spend a small fortune on a duel condenser rotovap remember you can use a couple 50’ stainless steel coils to achieve the same affect for about 400 bucks. Put them inline after the roto condenser, one in ice water and the second in dry ice acetone slurry leading to a cold trap. Use as big of a collection flask as you can on your cold trap or you’ll be stopping constantly
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You can also pre heat your solvent with a couple stainless steel coils in a hot bath connecting to your injection hose
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In a pinch we’ve partially submerged the inlet line into the hot water bath for the boiling flask. Not super efficient, and you have to make sure the boiling flask doesn’t contact that line, but it kind of works
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That’s the same guy who complained about it being moved in the first place. But ya I understand the concerns.
@Future had no affiliation with it being moved it was all on me he was simply doing a favor to me so that we could have the problem resolved.
@anon56994712 thank you for understanding
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Yeah that’s pretty minimal for surface area contact. That’s why 2 50’ stainless coils are more ideal. It’s a lot more space for it to travel to warm it up. In the past I’ve used silicone tubing coiled up (about 25 ft) for both hot injection and cooling vapor before a cold trap and after a condenser and I find the stainless is way better. It transfers heat a lot more effeciently.
I was honestly how surprised a difference it makes. The first time I tried it was about 4 years ago on a short path system I was using to recover ethanol in a pinch. I set up 25 ft of silicone hose in a coil inside of ice water with a pond pump after the spd and before the cold trap and it almost doubled the output. Dry ice slurry on cold trap for final stage of cooling. Used way less dry ice on the cold trap as well since the vapor was already mostly cooled and ultimately it all lead to way deeper vacuum levels.
Lol this shit has typos in the display. “Auto tunning”.
You sure this isnt made in china lol @spdking
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What was the pond pump for?
Circulating cold water. Helped trap more vapor
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Not too sure how useful reading the incoming vapor temp is either, other companies have added thermocouple wells seated in the condensing zones which also seems unneccasry to me. I guess you can get a feel for whether you’re passing the cooling capacity of the condensers/chillers, but theres other cues for that without reading a vapor temp.
I suppose, if one was trying to recover and fraction off different solvents from a solvent system based process, then the incoming vapor temp might be helpful. But even then, your solvents better be of fairly differing volatilities or a rotovap is not really going to help a whole lot.
I always think of heidolph as the apple of lab equipment, they add marked up features you don’t need and remove and or over complicate features to sell more ancillary equipment. I am 100% sure that summit will sell this at a much more reasonable price than heidolph, but will the price match the utility of these added features?
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I doubt it matters to him. people will buy his products regardless of the antics. he doesn’t do bad business its a bit green taxed price but he also gives a price match compete. I still bet he sold more items per day in this industry during his offset times than any other manufacturing company or hardware provider.
@Phytoalchemy you’re talking about a different league of equipment 
the aesthetics reflect the quality. Ive always admired that company but I never had a chance to use any of there equipment. Have you played with there toys before?
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There is a real problem on the horizon which I am very likely to address soon.
There was a major issue with true terpenes and things like honey cut.
Why?
Because these violate human rights and are in my opinion, crimes against humanity.
Selling anything that intentionally can and will damage people’s lives is very bad. Being too stupid to know means you need more education and Are a liability to those around you. And probably should not Be distributing things to anyone
Look at what just happened to the vape game.
Now, I have been saying for a long time THAT MDI inhalers are the only acceptable route for administration to the lungs.
That can be debated, most of us…and all pulmonary experts would agree that anything heated with unknown compounds is likely to have negative effects on the body.
That being said, some of the practices of members is concerning.
Please continue to do due diligence everyone and Be responsible.
I will post facts and information when they are complete and if you are uncertain about residuals or whatever please ask the forum and also equipment and materials
Some things are not compatible 
Keep making medicine not focusing on money - those people always do harm
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I’ve used heidolphs industrial rotovaps, some used older bench top rotovaps, their overhead stirrers, and their reactors. All of which are most definitely very high quality. I know some pharma labs that are still using 15+ year old equipment of theres no problem.
I just cant justify the price for their gear. Everytime I get a quote from them I usually get one that’s at least 50% less expensive from other companies that have at least 85-90% of the same quality that are made in the USA.
I also have been put off by their customer service several times. They need to hire more field technicians, I’ve called them with equipment that is totally down and had them take two weeks to send someone to fix it, and their gear is too digital and expensive for me to touch while it’s still under warranty.
$70k for a 20L rotovap?
$60K for a 20L reactor?
I just cant justify that, even when it’s for a lab that I don’t own.
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The new summit rotavaps don’t have enough kW of heat to even do the 80L/hr of ethanol recovery he claims. They only have 1kW more than a standard Ai roto. His claims are wildly misleading and false advertising to say the least. Just like his 12-18L/hr claims on his short path systems. 
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There’s mathematically no way it does 80L/hr. Especially when the amount of heating power the bath comes with (7kW) was what he claimed at MJBizCon. I could just tell by the size of the chiller he paired it up with that no in-house testing/R&D was adequately performed to come up with the “80L/hr” he claims.
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I lost faith in summit SOP when I bought a pig filter… It pisses out the side just like the little pig in the logo 
should have known better.
Although the quality of their glass is great.
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