PortaCount 8048 by TSI - Mask Fit Test System

Personal Monitoring Datalogging
Mask Fit Testing Manufacturer: TSI
PortaCount 8048 by TSI - Mask Fit Test System
Training
Available
PortaCount 8048 by TSI - Mask Fit Test System
PortaCount 8048 by TSI - Mask Fit Test System
PortaCount 8048 by TSI - Mask Fit Test System
Training
TSI PortaCount Troubleshooting Guide: Fix Daily Check Failures & Fit Test Failures
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PortaCount 8048 vs. QuantiFit 2: Complete Comparison Guide
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How to use the TSI PortaCount 8040/8048
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How to Setup and Perform a Fit Test on a TSI PortaCount

The TSI PortaCount 8048 is an OSHA-compliant quantitative respirator fit testing system for N95 masks and all tight-fitting respirators, including Series 99, 100, and FFP3 filtering facepieces. FitCheck Mode delivers real-time visibility into fit changes throughout donning and adjustment. Video animations guide users through correct exercise movements during testing, and group fit testing supports up to four simultaneous tests. Supports the OSHA-approved fast fit test protocol for a 65% reduction in test time. All rentals come with 25 free N95 Push Probes, more are available upon request at an additional cost.

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Rental Rates
Daily
$310.00
Weekly
$805.00
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Adapter kits and particle generators are required for most applications, please select these in the Required Modules or acknowledge that you have your own units.

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What is the TSI PortaCount 8048 used for?
It's a quantitative respirator fit test system using CNC technology, optimized for N95 filtering facepiece testing and OSHA 29 CFR 1910.134 compliance. It includes a Microsoft Surface tablet, FitCheck real-time seal visualization, and supports the OSHA-approved fast fit test protocol.
8048 vs. 8040 — which PortaCount should I choose?
Choose the 8048 when N95 fit testing is central to your program — it emphasizes the N95-specific fit factor range (1–200) and fast protocol. Choose the 8040 when your program covers a broader range of tight-fitting respirators without a specific N95 emphasis. Both include the Surface tablet and FitCheck.
8048 vs. OHD AeroFit — what's the difference?
Both use CNC technology and are OSHA-accepted. The 8048 runs TSI's FitPro software with Surface tablet integration; the AeroFit uses OHD's FitTrack ecosystem with onboard report generation. Choose based on your existing recordkeeping platform.
What is FitCheck mode?
FitCheck displays real-time fit factor changes as the worker dons and adjusts the respirator. It helps identify immediately whether strap adjustments or repositioning improve the seal — reducing re-tests and improving donning training.
Does the 8048 support group fit testing?
Yes — up to four workers simultaneously with four PortaCount units.
What's the most common cause of slow throughput at a fit testing event?
Not pre-staging respirators and consumables. Have masks pre-assigned by size, push probes, nuts, and alcohol supplies ready before the first worker arrives. Pausing between workers to locate supplies cuts throughput significantly.
What's included in the rental kit?
The PortaCount 8048 with Microsoft Surface tablet, alcohol capsule/cartridge, power supply, spare alcohol bottles, zero filters, spare wicks, tubing and adapters, USB cables and flash drive, probe tool, push probes and nuts, lanyard, FitPro software and database, manuals, and calibration certificate.
What does it cost to rent the PortaCount 8048?
$310/day and $805/week. Pricing beyond two weeks is by quote. For N95-focused programs testing large worker populations, contact us for a project quote — multi-unit or multi-week rates typically provide better value for annual fit testing campaigns.

Features & Capabilities

Calibration Certificate Available: ✓ Yes
Datalogging: ✓ Yes
Monitoring Scope: Personal Monitoring

Equipment Specifications

Testing Technology: Condensation Nucleus Counting (CNC)
Fit Factor Range: 1 to greater than 10,000; 1 to 200 for N95 masks
Compatible Respirators: Full-face elastomeric, Half-face elastomeric, NIOSH series-100, series-99, series-95 filtering-facepiece, Series FFP1/FFP2/FFP3
Measurement Method: Direct measurement of fit factor (Cout/Cin)
Flow Rate: Sample 350 cm³/min; Total 1000 cm³/min (nominal)
Working Fluid: 99.5% reagent grade isopropanol; 6 hours run time per charge at 70°F (21°C)
Connectivity: WiFi, USB-C, USB-A
Recalibration Interval: One year
Pass/Fail Setting: User-selectable: 0 to 10,000
Display: External Microsoft Surface tablet (no built-in display); FitPro Ultra software interface
Group Testing Capability: Up to four simultaneous tests with four PortaCount units
Compliance Standards: OSHA-approved fast fit test protocol

Kit Contents

8048 PortaCount with Microsoft Surface Tablet / Tablet Power Supply, Alcohol Capsule & Cartridge, A/C Power Supply, (2) Spare Alcohol Bottles, (2) Zero Filters, (2) Spare Alcohol Wicks, Twin Tube Assembly, 3/16” and 1/4” Tube Adapters, USB Cables (2) (USB A–C and C–C) and Flash Drive, Probe Assembly Tool (Old Black Cylinder or White Push Probe Assembly), Push Probes and Nuts (25), Lanyard, Manuals, Software, Blank Database (Included on Flash Drive / Tablet), Calibration Certificate (emailed)

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