Portable Automatic Water Sampler

What is the Portable Automatic Water Sampler?

A battery-powered field sampler that pumps water into single or multiple bottles on a programmable time, flow or event schedule. It is the right choice for wastewater, stormwater and river monitoring where a representative composite must be collected without an operator present.

Overview

The portable automatic sampler combines a peristaltic pump, a distribution arm and a bottle carousel inside a sealed, insulated housing. Standard models accept 24 one-litre bottles for discrete samples or a single large bottle for composites, with a pre-rinse cycle that wets the intake line before each aliquot to reduce carry-over. Programming covers constant time intervals, flow-proportional pacing from a connected flow meter, and event triggers such as rainfall or pH excursions. Sample cooling to 0–4 °C with a compressor or ice pack preserves nitrogen, phosphate and bacteria during the holding period. Suction lift of up to 7 m suits manholes and small streams, and an IP67 housing with a rechargeable battery allows unattended operation for several days. Data logs record sample times and volumes for chain-of-custody documentation.

How does it work?

Environmental sampling equipment captures a volume of the target medium under controlled conditions so that the laboratory result represents the site. Automatic water samplers use a peristaltic or vacuum pump to draw a fixed volume into bottles on a time or flow-proportional schedule, with pre-rinse cycles to limit cross-contamination and refrigeration or ice to preserve samples. Sediment grab samplers close spring-loaded jaws when lowered onto the bed, while core samplers drive a lined tube to recover an undisturbed vertical profile. Low-flow groundwater pumps use bladder or helical rotors to lift water at 0.1–0.5 L/min, reducing turbidity and volatilization. Passive air samplers rely on diffusion or permeation into a sorbent, integrating exposure over days to weeks. Containers, tubing and sorbents are chosen so analytes do not adsorb, leach or degrade before analysis.

What are the key features?

• Programmable time, flow-proportional and event-triggered sampling modes in one unit.
• Peristaltic pump with pre-rinse and air-purge cycle limits cross-contamination.
• Twenty-four bottle configuration supports discrete samples for trend analysis.
• Compressor cooling holds samples at 0–4 °C without external ice.
• IP67 sealed housing and rechargeable battery allow multi-day unattended deployment.
• Recorded sample volumes and times support chain-of-custody documentation.

What are the technical specifications?

A typical portable automatic water sampler configuration offers bottle configuration of 1 × 10 L or 24 × 1 L, sample volume of 10–1000 mL, programmable, suction lift of Up to 7 m, pump type of Peristaltic with spring-loaded rollers, intake velocity of ≥ 0.3 m/s at 3 m lift and sample cooling of 0–4 °C, compressor. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Portable Automatic Water Sampler is used in wastewater treatment influent and effluent, stormwater and combined sewer overflow, river and canal water quality surveys and industrial discharge permit sampling. Across the wider Environmental Sampling class, laboratories also deploy it for contaminated site investigation, surface water and effluent monitoring and groundwater compliance monitoring.

Which standards and certifications apply?

Relevant standards and methods include ISO 5667-1, ISO 5667-3, ISO 18400-101, ASTM D6907, US EPA Method 1669 and EN ISO 16017-1. Certification candidates for this model are CE, RoHS and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Plan a sampling and analysis plan that defines locations, depths, frequencies, preservation and chain-of-custody. Clean and decontaminate reusable equipment between stations using procedures free of the target analytes, and collect field blanks, trip blanks and duplicates. Transport samples in coolers with ice at 0–4 °C and ship within the method holding time. Calibrate pumps and flow meters before each campaign and record volumes for flow-proportional composites. For regulatory work, follow the applicable guidance and keep records for audit. Store tubing and bottles away from solvents and exhaust, and replace worn seals and liners, which are common sources of contamination and leakage.

How do I select the right Portable Automatic Water Sampler?

Select this sampler when a composite or timed series of water samples is needed at a site without mains power or an operator. For manual spot checks, a handheld bailer or simple dipper is cheaper. In an RFQ, state the required number of bottles, cooling method, suction lift, whether flow-proportional control is needed and the desired battery life.

How does it compare with other Environmental Sampling variants?

Start from the matrix and the analytical method, because these decide the container, preservation and allowable holding time. For flowing water and effluent, choose between grab samples and automatic samplers that can composite over time or flow. For sediments and soils, decide whether a surface grab or an undisturbed core is required, and match the sampler material to the target analytes so metals do not leach from brass or alloy components. For groundwater, low-flow sampling gives lower turbidity and more reproducible metals results than bailers. For air, select active sorbent tubes when short-term concentrations are needed and passive samplers when long-term averages are sufficient. Confirm decontamination procedures, blank requirements and the number of duplicates before specifying.