Picarro L2140-i 

Isotopic water analyzer for δ¹⁸O, δ¹⁷O, δ²H, and 17O-excess measurements. Supports liquids, vapor, and flexible throughput modes. Simplifies paleoclimate and hydrology research with minimal drift and high reproducibility.

• Status: Active
• Country: USA
• Isotopic: Yes
• Type of measurable elements: Light stable isotopes (C, N, S, O, H)
• Measurable isotopes/elements: δ¹⁸O, δ¹⁷O, δ²H, 17O-excess
• Precision : Liquid Mode: δ¹⁸O: ±0.025‰, δ²H: ±0.1‰, δ¹⁷O: ±0.025‰, 17O-excess: ±0.015‰ (High Precision Mode) Vapor Mode: δ¹⁸O: ±0.04‰, δ²H: ±0.1‰, 17O-excess: ±0.015‰ (3600 s averages)
• Drift : δ¹⁸O: <0.2‰; δ²H: <0.8‰; 17O-excess: <0.2‰ over 24 hours
• Measurement range : Vapor: 1,000–50,000 ppm; Liquids: TDS <200 g/kg
• Measurement rate : Up to 900 injections/day (Survey mode); ~1 Hz for vapor samples
• Probed volume: Small cavity with ~40 sccm sample flow
• Throughput : Standard mode: 27 samples/day; Express mode: 50 samples/day; Survey mode: 900 injections/day
• Laser : Tunable diode laser for cavity ring-down spectroscopy
• Power Requirements and Consumption : 100–240 VAC, 47–63 Hz; <375 W start-up; 120 W steady-state (analyzer), 150 W (pump)
• Environmental requirements : Liquid mode: 10–35°C; Vapor mode: -10–45°C; Humidity: <85% RH non-condensing
• Dimensions and Weight: Analyzer: 43.2 cm W × 17.9 cm H × 44.6 cm D; Weight: 20.4 kg (analyzer), 6.5 kg (external pump)