Anything over 500 is pointless.
Jamie and I went to a lecture for Green Plumbers in Seattle, with John Koeller explaining their testing method.
He said that anything over 500 was pointless. Over and over again that point was made.
He explained that manufacturers were tweaking the bowls to pass the test, often at the detriment of other needed functions.
But he has no method for testing what is missing.
The testing method originally was invented by Toto and now is being done by John, but with a twist.
The original testing was done with miso bean paste. This way you could see marks left in the bowl by the testing.
The paste also had some stickiness to it that would cling.
It also floated better, more like the real deal.
To save costs, the MaP decided to wrap the paste in plastic, making them slip through better, with no more marking of the bowls.
Since they were now heavier, they didn't represent floating waste anymore. Toilets tested with the plastic wrapped paste was now getting better test results.
That being said, 500 is the good number.
For example, the old paste method would give the elongated Toto Ultimate a rating of 325 grams.
I installed one in my home for two years, and only plugged it once during that time.
That was in a home with weekend gatherings of 30 plus people, and occasional parties of 100 or more.
I also installed four of these in the church I go to. No problems at the church either.
The church previously had 5.0 gallon American Standard Cadet toilets. The Cadets plugged so often that the assistant minister, wanted to find another job. He hated going into plunge the womens bathroom. He was the only man there during the day.
We installed a few Toto Drakes, Toto Ultramax's and Toto Ultimates there. Problem solved.
A toilet with a higher than 500 gram rating, the Kohler Cimarron plugged often in my home. That one is now in my daughter home, and she wants it replaced. Here main bath has the Drake, and that one doesn't plug. The Cimarron has sharp turns in the trapway. It may work pretty well in the consistent MaP testing, but in the "real world" it plugs more.
MaP testing uses plastic lined, 4"x 3/4" missiles. They will zip through just about anything.
My research is based on selling and installing three thousand toilets a year.
And home testing. We install these in homes and track performance.
The only report that has long term reporting.
Wait, it's Sunday morning, time for my coffee and newspaper.
TOTO manufactures many of their products in America