Choosing an environmental indoor air measurement device usually comes down to how much particle detail you want, how much data you can store, and which pollutants you care about. Two very different tools fit that need: the TC8100 Air Quality Monitor and the Triplett EPC175 Particle Counter and Air Quality Meter. Both track particulate matter and basic comfort readings, but one leans toward fine-particle sensitivity and the other toward broader chemical sensing.
Quick verdict
Pick the TC8100 for fine-particle sensitivity and easy-to-read trend history. Pick the Triplett EPC175 for broader chemical sensing and more onboard data storage.
Listed prices
| Product | Listed price | Price bar |
|---|---|---|
| TC8100 Air Quality Monitor | USD 159.99 | |
| Triplett EPC175 Particle Counter | USD 156.71 |
The listed prices are USD 159.99 for the TC8100 and USD 156.71 for the Triplett EPC175.
Where each product wins
TC8100 Air Quality Monitor
- Tracks PM0.3, PM2.5, and PM10 with a listed accuracy of ±12μg/m³.
- Stores 999 timestamped measurements and shows them as a trend chart.
- Adjustable audible alarm when the particulate threshold is exceeded.
Triplett EPC175 Particle Counter
- Adds formaldehyde (HCHO) and total volatile organic compounds (TVOCs) alongside PM2.5 and PM10.
- Stores 5000 data sets with date and time, viewable as historical curves.
- 3-inch color TFT display with five brightness levels.
- New - Open box condition with battery, AC adapter, and USB power/charging cable included.
Product notes
TC8100 Air Quality Monitor
This monitor wins if fine particles are your main worry. It detects PM0.3, PM2.5, and PM10 in one pass, so you can see when the smallest particles spike. The 999-record memory keeps a timestamped history, and the trend chart is generated on the device itself, so you can review recent patterns without exporting data. The audible alarm adds peace of mind for the bedroom or workspace. Its limitation is that it stops at particles, temperature, and humidity; there is no formaldehyde or TVOC detection, and 999 points is less archival than the EPC175's 5000.
Triplett EPC175 Particle Counter
The EPC175 is the broader environmental partner. It goes beyond particle counts by reading formaldehyde and TVOCs, two pollutants that become relevant after painting, adding furniture, or cleaning with strong chemicals. The 5000-sample memory with timestamps is generous, and the color TFT display with five brightness levels helps you read results in dim or bright rooms. It comes in New - Open box condition with the battery, AC adapter, and USB power/charging cable included. The downside is that it skips the smallest ultra-fine particle tracking, so it will not tell you about the finest particles.
Final choice by use case
Reach for the TC8100 when you need ultra-fine particle data and easy trend review. Choose the Triplett EPC175 when chemical sensing and more memory matter more.
