ISCO Avalanche Portable Refrigerated Sampler (DISCONTINUED)

  • MCERTS This sampler is MCERTS certified
  • 512kB Memory Provides great flexibility for logging environmental data
  • Patented Pump Revolution Advises when the pump should be replaced and ensures accurate sample volumes
  • RS Hydro are UK ISCO Distributors & Stockists
Product Options


Please note the Avalanche has been discontinued and replaced by the BLZZRD.

Based on the industry leading 6712 controller the Avalanche Auto-Sampler combines on-the-go cooling via a 12-volt deep cycle battery (delivers 48 hours or more of refrigeration) or AC power, with the advanced control, communication and data logging features of the 6712 controller. The power-saving cooling system remains on standby until the first sample is drawn, and then switches on to preserve the samples until they are collected.

Complex programs can be easily entered to suit your needs. Available routines include: sampler pacing by time, non-uniform time, flow or external event; pause and resume for intermittent discharge flow monitoring; and random interval sample collection. Bottle configurations include 5 gallon and 2.5 gallon composite as well as 4 x 1 gallon and 14 x 950 ml sequential.

Standard Features

  • 512Kb standard memory gives great flexibility for logging data.
  • 'Plug and play' connection provided by SDI-12 interface - Compatible with measuring devices including multi-parameter sondes from leading manufacturers.
  • Watertight and dustproot controller enclosure (NEMA 4x, 6 (IP67).
  • Simple Setup using standard programming (extended programming for more advanced features).
  • Patented pump revolution counter - Tells user when pump should be replaced and ensures accurate sample volumes.
  • Sample delivery velocity of 2ft/sec (EPA-recommended), even at head heights of 26ft.

Manufactured by: Teledyne ISCO
Model: ISCO Avalanche Portable Refrigerated Sampler (DISCONTINUED)

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Stormwater runoff compliance
Enforcement Monitoring
TMDL and watershed monitoring
Any application that requires advanced sampling with reliable on-demand cooling,communications and data logging for water quality, flow and rainfall parameters.


Avalanche® Multi-Bottle Transportable Refrigerated Sampler
Size (H x W x L) 30.5 x 14 x 24 inches (78 x 36 x 60 cm)
Weight Dry, less battery - 76 lbs (35 kg)
Power Requirements 12 VDC, 6 Amps (supplied by external battery), OR 87 to 264 VAC, 47 to 63 Hz, 2 Amps
Cooling CFC-free refrigeration system maintains sample temperature at 3°C ±1°C at ambient temperature of 0°C to 40°C.
Operational Temperatures 0°C to 50°C
Intake Purge Adjustable air purge before and after each sample.
Tubing Life Indicator Provides a message to change pump tubing.
Intake Suction Tubing Length 3 to 99 ft. (1 to 30 m), Vinyl or PTFE/FEP lined, ID 0.375 in.
Pump Tubing Life Typically 1,000,000 pump counts
Typical Repeatability ±5 ml or ±5% of the average volume in a set
Maximum Lift 28 ft. (8.5 m)
Typical Line Velocity @ Head Height 3.0 ft./s @ 3 ft; 2.9 ft./s @ 10 ft; 12.7 ft./s @ 15 ft. (0.91 m/s @ 0.9 m; 0.87 m/s @ 3.1 m; 0.83 m/s @ 4.6 m)
Sample Presence Detector Non-wetted, non-conductive sensor detects when liquid sample reaches the pump to automatically compensate for changes in head heights.
Weight 13 lbs. (5.9 kg)
Size 10 x 12.5 x 10 inches (26 x 32.x 25 cm)
Controller (continued)
Operational Temperature 32° to 120°F (0° to 49°C)
Enclosure Rating NEMA 4X, 6 (IP67)
Program Memory Non-volatile ROM
Flow Meter Signal Input 5 to 15 volt DC pulse or 25 millisecond isolated contact closure
External Trigger Initiates sample collection and cooling from contact closure signal
Number of Programmable Composite Samples 1 to 999 samples
Clock Accuracy 1 minute per month, typical, for real time clock
Sample Frequency Selection 1 minute to 99 hours 59 minutes, in 1 minute increments Non-uniform times in minutes or clock times 1 to 9,999 flow pulses
Sampling Modes Uniform time, non-uniform time, flow, event. (Flow mode is controlled by a flow module or external flow meter pulses.)
Programmable Sample Volumes 10 to 9,990 ml in 1 ml increments
Sample Retries If no sample is detected, up to 3 attempts; user selectable
Rinse Cycles Automatic rinsing of suction line up to 3 rinses for each sample collection
Program Storage Five sampling programs
Sampling Stop/Resume Up to 24 real time/date sample stop/resume commands
Controller Diagnostics Tests for RAM, ROM, pump, and display


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