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▶ 📝 Description

Proton-Transfer-Reaction-Time-of-Flight Mass Spectrometer with an online-GC option for the seperation of isomeric VOC

▶ 💨 Sample from 2026-04-01

Sample flow type	Vacuum sampling
Sample flow rate	50.0 mL/min
Air flow	500.0 mL/min
Residence	2.0 s

▶ 🔧 Inlet System from 2026-01-01

Measurement height above ground	2.0 m
Measurement height above building	1.0 m
Distance from NOx inlet	0.0 m
Distance from condensables inlet	0.0 m
Distance from ozone inlet	0.0 m
Distance from gc inlet	0.0 m
Inlet tube material	e-polished stainless steel, heated > 70°C
Residence time	4.7 s
Inlet line heating	✓
Line heating	90.0 °C
Filter inlet material	None
Oxidant removal	e-polished stainless steel, heated > 70°C

▶ 📐 Calibration from 2025-03-31

Calibration unit
Ecu system	Standalone dilution system
Dilution gas max flow	1.0 l/min
Diluent gas max flow	0.02 l/min
Standalone
Kind of dilution system	LCU
Dilution manufacturer	Ionicon Analytik
Zero gas generation	Syn. Air supply
Zero gas blank frequency	1.0 hours
Blank substraction	Applied
Calibration frequency	24.0 hours
Linearity check frequency	24.0 hours

Calibration Certificates (1)

Name: NPL_OVOCs_FZJV Supplier: NPL Cylinder: D296770 Valid: 2026-01-08 → 2027-01-07 Applied: 2025-03-01 → 2026-03-05 Dilution: 0.001 – 0.008

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▶ 📤 Data Submission

Databases Database ACTRIS

▶ ✅ Data QA/QC

Time series analysis of calibrations	✓
Time series analysis of compound ratios	✓
@VOC@	✓
Bool other	✗

▶ 📋 Measurement QA/QC

Instrument log book

Electronic

▶ 🧬 Compounds from 2024-07-01

#	Name
1	toluene
2	benzene
3	methyl vinyl ketone
4	acetone
5	m-xylene
6	3-carene
7	isoprene
8	decamethylcyclopentasiloxane
9	octamethylcyclotetrasiloxane
10	hexamethylcyclotrisiloxane
11	dimethyl sulfide
12	methyl ethyl ketone