Cloth Diaper Insert Absorbency Test #1

A couple of days ago, my friend Heather over at The Parenting Patch did a great cloth diaper insert absorbency test on some of her inserts.  She tested out Fuzzi Bunz minky, Best Bottom Hemp, Sunbaby Bamboo, and Alva Baby bamboo.  When I shared it on my Facebook page, one of my readers asked about BumGenius diaper inserts.  With that in mind, I figured I’d pick up where Heather left off and test some of my own inserts.

Testing Jamtots, BumGenius, large Blueberry, and small Blueberry inserts

Testing Jamtots, BumGenius, large Blueberry, and small Blueberry inserts

I tested four inserts: a BumGenius 4.0 large microfiber insert, a Blueberry large microfiber insert, a Blueberry small microfiber insert, and a Jamtots hemp insert.

My testing method was a bit different than Heather’s method.  (This was just the easiest, most scientific way for me to be exact.)  I started out with my four inserts.  I weighed each insert dry.  After that, I soaked each insert in a liter of water for two minutes, then allowed the insert to dip for one minute.  I then weighed the wet insert.  To test how compression would impact each insert, I gently squeezed out the extra moisture from each insert and again weighed it.

Some metric conversion stuff for you: one liter of water is approximately a quart.  I used the scale to weigh the wet inserts because one milliliter of water weighs one gram, so it was just the most simplistic method I could think of.  Oh, and a cup of water is roughly 250 milliliters.

Jamtots:
dry weight: 58 g
soaked weight: 219 g
wrung out weight: 164 g

So the Jamtots absorbed 161 mL of water, which is roughly 2/3 of a cup.  After I squeezed out the extra water, there was 106 mL remaining, which is just under 1/2 a cup.  The Jamtots insert held roughly twice its weight in water after compressing!  For the compression test, the Jamtots lost 34% of the moisture.  I believe I squeezed the Jamtots most vigorously since it’s harder to tell by feel with the Jamtots insert.

BumGenius 4.0:
dry weight: 63 g
soaked weight: 311 g
wrung out weight: 221 g

The BumGenius 4.0 insert absorbed 248 mL of water in two minutes, which is just short of a full cup of water!  However, it’s microfiber, so it is more prone to compression than the hemp insert tested above.  After wringing out the extra water, it was down to 158 mL remaining, which is roughly 2/3 of a cup.  Had I been more vigourous with squeezing out the water, I probably would have lost more water.  What this demonstrated is that while microfiber is extremely efficient at absorbing moisture very quickly, it’s quite prone to compression.  After compression, there was a 37% reduction in absorbed moisture.

Small Blueberry:
dry weight: 41 g
soaked weight: 255 g
wrung out weight: 128 g

The small Blueberry insert absorbed 214 mL of water in two minutes, which is essentially 9/10 of a cup of water.  Again, it’s also microfiber, so the same details after wringing out apply.  After wringing out, I was left with 87 mL of water, which is just over 1/3 of a cup.  That amount of compression was more in line with a baby truly compressing the diaper.  After compression, there was a 60% reduction in the absorbed moisture.

Large Blueberry:
dry weight: 73 g
soaked weight: 377 g
rung out weight: 241 g

In two minutes, the large Blueberry insert absorbed 304 mL of water, which translates out to over 1 and 1/4 cups!  Again, it’s microfiber, which makes for a super fast absorption rate, but the same compression issues still apply.  After wringing out (again, more vigourously than the BumGenius wring out), 168 mL (or just under 3/4 of a cup) remained.  That’s a compression loss of 45%.

Ultimately, the winners for most absorbed after compression were:

1st: Large Blueberry
2nd: BumGenius 4.0
3rd: Jamtots
4th: Small Blueberry

Disclosure: Some links are Amazon affiliate links.  Should you buy an item from one of them, I will receive a small commission, which is used to support Cloth Diaper Addicts.

About Suzi

Suzi is an American ex-pat living in British Columbia. She's a cloth diaper addict, wife, mom of three, and President of the Prince George chapter of Cloth for a Cause.

Comments

  1. April Wray says:

    Great thorough review!

  2. This is interesting, I want to test my inserts now to see which of mine are the most absorbent!

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