At-home kit · $50 · Results in ~15 min
At-home microplastics test kit for your water.
See the plastic particles in your tap, filtered, or bottled water — without mailing a sample to a $600 lab. Stain, filter, shine a blue light. Plastic glows pink.
A real customer result. Each pink dot is a plastic particle stained with Nile Red.
How the microplastics test kit works
Four steps. About 15 minutes, start to finish.
01
Digest
Add the peroxide vial to a 100 mL sample. It breaks down organic matter so it can't clog the filter or fool the dye.
02
Stain
Add the Nile Red vial. The fluorescent dye binds to plastic — and not to minerals, salts, or tannins.
03
Filter
Push the whole sample through the syringe filter. Every plastic particle is trapped on the disc face.
04
Glow
Shine the blue LED through the orange phone clip. Each pink dot is a piece of plastic. Photograph it for a count.
Want the full protocol? Read the methodology — the peer-reviewed Nile Red method, packaged for home use.
At-home kit vs. a mail-in lab
| This kit | Mail-in lab | |
|---|---|---|
| Price | $50 — two tests | $598–$835 per sample |
| Turnaround | ~15 minutes, on your table | 2–4 weeks mail-in |
| Where it happens | Your home, your hands | A lab you mail a sample to |
| What you get | The actual particles, in front of you | A PDF from a technician |
| Tests per purchase | Two | One per invoice |
Read the full comparison: at-home vs. lab microplastics testing
What you can test for microplastics
Curious whether your filter actually works? See what we've tested — filters and bottled-water brands, with real results.
Microplastics test kit — FAQ
What is an at-home microplastics test kit?
It is a kit that lets you see the plastic particles in a water sample yourself, without a lab. You stain 100 mL of water with Nile Red dye, push it through a syringe filter, and shine a blue LED at the filter. Plastic fluoresces pink. The Water Test kit is $50 and includes two complete tests.
How much does a microplastics test kit cost?
The Water Test at-home kit is $50 with free shipping and includes two tests. Conventional mail-in lab testing runs $598–$835 per single sample, so a two-test at-home kit is roughly 12–16x cheaper per sample.
Can you really test water for microplastics at home?
Yes. The kit uses Nile Red — the same fluorescent dye used in peer-reviewed microplastics research. It binds to plastic but not to minerals or dissolved solids, so stained plastic glows pink under blue light. You can count the particles by eye and upload a photo for a validated count.
Is there a microplastics test kit near me?
There is no need for a local lab. The kit ships free to your door anywhere in the US, and you run the test yourself in about 15 minutes — no appointment, no technician, no sample to mail.
How accurate is an at-home microplastics test?
Nile Red staining is the standard consumer-accessible method for detecting microplastics and is used by labs worldwide. The kit reliably answers whether plastic is present in a sample and how much. It does not identify the specific polymer — that requires py-GC/MS instrumentation — but for the question 'how much plastic is in what I'm drinking,' it is a direct, visual answer.
What can you test with the kit?
Anything you can pour 100 mL of: tap water, bottled water, filtered water from a pitcher or reverse osmosis system, fridge-dispenser water, brewed tea or coffee. Each kit does two samples, so you can run a side-by-side — for example, tap versus filtered.