The GOES plankton filter and laboratory equipment.
The following page list all of the equipment required to be part of the GOES project to measure plankton and micro-plastics, at sea, around our coasts, in rivers, your tap water and in the deep oceanic water. The total cost including the free GOES plankton filter is approx 130 Euro, this is much the same cost just for a more conventional student plankton net
|GOES project filter||The cost of the filter is 35 Euro, we free issue (need to add delivery cost) to yachts for the first 100.||We will free issue this filter from yacht Copepod, or send to you at cost price for postage|
|90mm disc for base light||supplied free of charge with the GOES filter||We will free issue this item with the filter.|
|Microscope||Link to Amazon store||90 Euro|
|Base light||Link to Amazon store||8 Euro|
|Filter papers||Link to Amazon store||10 Euro for 50 filter papers|
|Tweezers||Link to Amazon store||8 Euro|
Link to Amazon store 90mm glass plates
Link to Amazon store 90mm plastic plates
10 Euro for 20 plates (reusable many times)
|Total approx cost excluding GOES filter||130 Euro|
A simple USB type microscope or similar is fine for this application, they may be purchased on-line from Amazon at the following link; price approx 80 Euro
In addition to doing the GOES citizen science work, you will have great fun using the equipment to look at the plankton and identify all the different groups.
You never know, you may actually find a new species, because very little is actually known about deep ocean plankton
An LED USB light is used to illuminate the sample from underneath. Place the 90mm diameter pvc disc on the light. The centre 25mm diameter hole just allows the light from one of the LEDS to illuminate the plankton sample up through the 5mm diameter holes on the lower filter disc.
We will provide you ( free of charge) a 90mm disc to sit on top of the the light box, such that only one LED is visible, and light reduced the the best level.
The plankton and micro-plastic filter
The filter is made by GOES and costs 35 Euro, drawings are also provided to allow you to make your own.
The filter is a 50mm diameter tube with a 50mm plastic threaded union with O ring seal.
There are 2 x plastic plates with 5 x 5mm holes. The plates are made from clear acrylic plastic. The ones in the photo are in PVC plastic so that can be seen more easily on the photo.
The 50mm diameter white filter paper is placed between the two plastic plates, and the assembly is then placed on the bottom section of the GOES filter.
Place the top pipe section of the filter onto the bottom section with the two plates and connect the upper and lower sections using the threaded ring. Making sure that the plates do not turn. The holes on the plates need to stay in alignment.
The following is a drawing of the filter, if you wish to make your own filter, you may construct according to this design.
Unfortunately it is made from plastic, but it should last for many years. It is made from 50mm pvc plastic pipe, with a PVC union fitting. There is a 60mm diameter x 5mm thick disc in the union, with a 25mm hole. The filter paper sits on top of the disc.
The pipe is solvent glued into the union.
The filter is really easy to make if you have access to professional pipe fittings, but you may also be able to make one with fittings from a good plumbing store.
50mm diameter, 0.45um pore size
Any good quality, stainless steel tweezers will be okay
Use a 90mm diameter Petri plate, it also allows you to cover the sample and keep. Please note that if you wish to keep the sample, it will need to be dried. Wet plankton samples rapidly deteriorate and have a really bad smell. The petri plate is made from glass, and is reusable. The plastic ones can also be reused many times and might be safer on a boat