Home culture plate analysis
See what grew. Understand what it means.
Capture your culture plate in the Petri Studio app, get a guided read of visible growth, and keep a room-by-room history so you can see what changed over time.
- App coming soon
- Works with compatible settle plates
- First analysis free, no kit required
For informational use. Not a substitute for professional inspection or medical advice.
Room history
A result is more useful when you can see what changed.
Save each plate to the room it came from. Petri Studio keeps dates, photos, and prior results together, so a future test has context instead of starting from zero.
- See the percentage change since your first test
- Repeat the same room after cleanup or repairs
- Look back at prior plate photos and reports
Why Petri Studio
Most home test kits stop when the plate starts growing.
The harder question comes next. What are you looking at, how does this room compare with another, and what should you consider doing after the result?
| A typical DIY kit | Petri Studio | |
|---|---|---|
| What you do | A typical DIY kitExpose the plate. Wait. Count colonies. | Petri StudioCapture the plate in the app and get a guided read of visible growth. |
| What you get | A typical DIY kitA number you interpret yourself, plus an internet search. | Petri StudioA plain-language read of what is visible, with the limits stated. |
| What happens next | A typical DIY kitNothing. The kit is used up. | Petri StudioThe result saves to the room and date it came from. |
| What you keep | A typical DIY kitA photo on your phone. | Petri StudioA room history you can compare against the next test. |
How it works
Four simple moments. One clearer picture.
- 01
Expose
Open the plate in the room you want to test. With the Petri Studio kit, leave it out for 1 to 2 hours, then close it.
- 02
Wait
Keep it closed at room temperature for 3 to 5 days. The app reminds you when the plate is ready to photograph.
- 03
Capture
Take a clear photo in the app while keeping the plate closed.
- 04
Understand
Review visible growth, save the room, and see what to consider next.
Plate compatibility
Use a compatible settle plate you already have.
Petri Studio is useful even before you buy a kit. Capture a compatible settle plate in the app, get a guided read of visible growth, and save the result to the room it came from.
Analyze your first plate free- Works with plates you already own
- Designed for compatible settle plates
- Keeps every result tied to a room and date
Capture quality matters. Even light, a straight-on photo, and a closed plate give the clearest read.
The kit
Everything you need to test several spaces, and understand every plate.
The kit pairs six culture plates with the Petri Studio analysis, so the value does not end after incubation. Each plate can become a saved result tied to a room and date.
- Six pre-poured culture plates
- Gloves and instructions
- Code for six plate analyses
- Free room and result history
Petri Studio Guided Mold Screening Kit
$34.99six plates and six analyses included
Every kit ships with a code that unlocks six plate analyses in the app. No extra purchase needed. Kits ship when the Petri Studio app launches, so the two arrive together.
Pricing
Your first analysis is free. After that, buy analyses in packs.
Using a plate from another brand? Analyze the first one free, then buy a pack in the app. No subscription. Petri Studio kits already include analysis for all six plates.
- First outside plateFree
- 1 analysis$5.99$5.99 each
- 3 analyses$14.99$5.00 each
- 6 analyses$24.99$4.17 each
One-time purchase, not a subscription. Bought in the app, never on this site.
Plates and analyses together
$34.99
Six culture plates plus a code for six analyses, so every plate in the box is already paid for.
Useful context. Not a diagnosis.
Keep it closed
Never open a developed plate. Photograph through the lid and dispose of it as directed.
Read what is visible
Results describe visible patterns and give educational guidance, not species identification.
Escalate when needed
Persistent moisture, widespread growth, or concerning symptoms may need professional help.
Get the app
Analysis happens on your phone.
The app is almost ready. Leave your email and we'll send you the link on launch day. Your first outside plate is analyzed free, with no card and no account tier.
Coming to iPhone and Android
A scan code will live here on launch day. Point your phone camera at it to open Petri Studio in your app store.
Start with the settle plate in front of you.
- Already have a compatible settle plate? Analyze it in the app.
- Need a complete setup? Start with the Petri Studio kit.