Liters Per Minute (LPM) Measurements for HHO generators

How Many Liters Per Minute?

When we first began 7 years ago, there were no standards for measuring HHO gas production from a generator (still are no standards today). There were various methods tried from plastic bottles in a bucket of water, to gas/air flow meters, to highly expensive hydrogen meters that no one could afford. One mfg used such a complicated method of measurement, that no one would ever be able to compare test results (he claimed his was absolutely the most efficient units on the market). Ridiculous. 

The upside down plastic bottle in a tank of water was and is most commonly used, but is not accurate and can have so many variables as to make it unreliable. One bottle may be ultra thin and light, another may be a heavier mil thickness, skewing the results. Since the measurement is based on timing, the start and stop times can be off by a few seconds either way, also skewing the results.

But the biggest problem in measuring the accurate production of HHO gas from a generator, is quite frankly, fraud and lying, not the measurement technique.

We used these types of gas/airflow meters instead of the bottles, as we felt they were more accurate. The argument in using these is that the heat and steam produced by an hho generator can also skew the results.

Our original kits were always tested after fully warmed up and broken in. But we found them inconsistent, and decided to not use them for hho generator systems.

How To Fake The Results

I cannot emphasize enough how MOST companies selling hho kits online, FAKE their results. That's why we quit even publishing them - whats the point if everyone is just lying about it? How do they Fake the numbers? Easy. They know you are not paying attention, so here is what most do:They Crank Up amperage/voltage Way higher than normal for short videos.They Don't show amp gauge/voltage meter at same time as gas production.They zoom in close to bubbles and turn up current out of sight of camera. They have NO PROOF and NO VIDEOS of production - so they just make up numbers.

How Can I Tell If They Are Accurate?

Best way to tell- Ask for PROOF. Not just a website claim that anyone can say. Ask to see a video of the kit working, with a visible amp gauge/voltage meter, visible at all times, while taking the measurement. If they can't or won't provide it, it is most likely FAKE. 

Remember, there are a lot of really bad kits out there, sold cheap for a quick buck. They don't care if you get results or not - just want your money. So, buyer beware! If they are willing to fake LPM claims, they are most likely willing to lie about their kits as well.


Robert Volk
Robert Volk


3 Responses

Pratik jain
Pratik jain

March 16, 2016

I’m Pratik Jain from Ramdeobaba college doing my Mtech project on performance testing and emission measurement of various blends of HHO gas and gasoline on 256 cc 4 s petrol engine… I need the variation of flow rate with amperage increase…. Like 1 amp 2 amp…. For my engine…. How can I calculate it….. Please help me


August 24, 2015

Thanks Dave- we see that too. so much faked evidence used to sell kits that don’t perform as indicated. LPM is no longer an accurate method of determining viability of a kit. Results are the best way to determine that.


August 23, 2015

Hello Robert.

You are right about people faking the results of most anything just to part a person from their hard-earned money. There are a lot of uneducated people also spouting about things they know little about, I call them snake oil salesmen.

It is bad for many crooks to misinform aspiring hho enthusiasts which causes mistakes, damage to equipment and other harms.

Right now the hydrogen interest is growing and has been for about 10 years or so and even yet there isn’t as much good information out there as there should be.

Keep posting good information and try to steer people in the right direction and you will be blessed.

Take care. Dave

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