Category Archives: Testing


Testing Our Absorbent Material on Lube and Diesel Oil

Below is the test video we made to show you the amazing absorption qualities of our absorbent material. Just in case you are on your phone at a family wedding and can’t listen to the audio, he is a quick synopsis of the narration, which I did myself by the way.

In the first half of the video, you can see our absorbent material being tested on lube oil. As I say in the video, one thing that is fascinating is the speed in which the oil spreads over the water. As you can see, the test is being done in a tank. There is obviously no water movement in the tank and yet it is surprising how fast the oil spreads.

It might be a little difficult to see this movement and/or the oil itself. That is why in the second part of the video, we used diesel oil dyed with food colouring. Now, the spread of the oil is much more noticeable.

In both tests, you can see how well our material absorbs the oil. Notice how our material sits on top of the oil. Other absorbents, such as sawdust, sink which means they absorb the oil from the top. Unfortunately, it means that other absorbents absorb the water from below.

It doesn’t take having a PhD to work out that this means that other absorbents are much less efficient than ours. Not only is more absorbent material needed but also more time is needed to absorb all the oil. Of course, this has the potential to be more damaging to the environment as well.

When you play the video, depending on your bandwidth, you might find it better to hit the pause button for a minute or two. That way, you will get a better viewing experience.

Anyway, I hope you enjoy the video. If you need anymore information, please ask a question in the comment section below or get in contact with us through the ‘Contact Us’ page in the menu above.

Cocopeat Testing

Cocopeat Testing with Dragon Sorb’s Boys in the Lab

Here at Dragon Sorb, we are constantly doing cocopeat testing to make sure that it is of the highest quality. Often (well, sometimes) customers ask us how we do are testing so we thought we would show you. Not exactly exciting, we know, but interesting in its own little way.

As this is the first in the series, we’re going to start with the most obvious: cocopeat and sawdust. It’s worth mentioning before we start that some of you might be asking yourselves why we don’t just use sawdust itself. It’s a good question. Basically, the problem with sawdust is that it sucks up water as well as oil. Later on, we will explain why this is such a problem.

Additionally, we’d like to apologise for some of the camera work. Fortunately for all concerned, we are much better at making absorbent for oil spills than we are at taking pictures.

The Purpose of the Cocopeat Testing

To test the absorbency of two different products with oil and seawater: Dragon Sorb’s Cocopeat and sawdust.

Materials Used for Cocopeat Testing

Materials Used


The basic process for testing is the same. We started with 330 grams of saltwater, poured in 100 grams of diesel oil, and then started sprinkling the sawdust or cocopeat on the surface. We continued until all the oil (as far as we could tell) had been absorbed. We then weighed everything, and then subtracted the original weight of the container, salt water and diesel. The final number was the amount of of sawdust or cocopeat used.

Sawdust Testing with Saltwater and Diesel Oil

Cocopeat Testing

Sawdust (left) and Salt Water with Diesel Oil (right)

Cocopeat Testing

Sawdust Sprinkled Over Salt Water and Diesel Oil

Cocopeat Testing

View on the Top During the Absorption Process

The above picture shows the cocpeat during the absorption process. The sawdust settles in the centre, under the diesel oil and above the saltwater.  If you remember, we spoke about the problem of using sawdust earlier, and this shows us where the problem occurs in the process. The sawdust absorbs oil from above and also absorbs water from below.

Cocopeat Testing

Filtering Oil, Salt Water, and Sawdust

When the sawdust becomes solid we filtered the oil, salt water and sawdust. What goes through the filter is the salt water and remaining oil. What is left in the filter is the sawdust and the absorbed oil and salt water.

Cocopeat Testing

Filtered Residual Water

The filtered water is evidently brown. This shows that there is still oil remaining and that while the sawdust has absorbed some of the diesel, it hasn’t done as well as might have been expected.

Let’s move on to our competitor’s cocopeat testing.

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