Liquid Sampling Systems

Spot Sample Stations for Liquids

Mechatest design custom made liquid spot sample systems that can take spot samples of liquids under high pressure or under normal atmospheric circumstances.

The systems with sample cylinders enable operators to obtain samples of liquids with high process pressures, liquefied gasses and hazardous or toxic, the bottle samplers with or without needle can be used as closed loop sampler on low process or vapor pressures, non hazardous or toxic, water or viscous solutions.

The spot sample collected in a sample cylinder is more safe and easy for transportation to the lab.

Slim design make the Mechatest systems the best choice for any customer specific application.

Mechatest Liquid Sampling Solution Rack System
Mechatest Sampling Solution Rack System

Mechatest Liquid Sample Station Bypass Configuration

Sampling System Features


  • Complete sampling systems available in 316 stainless steel, Monel, Inconel, Incoloy, Hastelloy, Duplex or PTFE
  • Standard with Schott Duran sample bottle holder or to customer specifications and sample bottle
  • Samples with process temperature > 60°C shall be equipped with sample cooler
  • One-handle operation by multiple valves guarantees simple operation and easy sample taking without complicated sampling procedures
  •  Sampling systems with NACE MR0175 or NACE MR0103 standard


Applications will found in the Petrochemical and Chemical industry, products to be sampled are;

  • Single & multi phase liquid samples
  • Toxic liquid samples
  • Dangerous liquid samples
  • Volatile liquid samples
  • Mostly refined (commercial) gas oil, diesel oil, fuels, lubricating oil
  • Water / condensate samples (tap, brackish, saline, brine, demi)

  • Acid samples
  • Amine samples
  • Alcohol samples
  • Aromatic samples
  • Benzene samples
  • Bio-fuel samples
  • Brine Water samples
  • Chemical mixture samples
  • Cumene samples
  • DCE (DiChloorEthaan)
  • Glycol samples
  • Gasoline samples
  • Hydrocarbon samples
  • Ketone samples
  • Kerosene samples
  • Naphtha samples
  • Paraffin samples
  • Solvents samples
  • Toluene samples
  • Xylene samples
  • etc.

Sampling systems for Liquid Applications, for high pressure, low and high temperature, corrosive, arduous and sour service, strong toxicity, strong volatile and dangerous liquid gas mixture or gas which is bane to the environment.

Applicable Codes & Standards

  • ASTM D 4057
  • ASTM D1265-05
  • NACE MR0175 or MR0103

Check our list of all specific "sampling" codes & standards.

Safety Accessories

  • Spring return handles on valves
  • Safety relief devices for overpressure protection
  • Activated carbon filters on the venting outlet
  • Venting solutions to release pressure on the quick connectors or purging
  • Drain or drip trays with flange connections

VOC Detection in Sample Cabinet

Oil installations, petrochemical plants and refineries are industrial sites that manage several raw materials (crude oil, natural gas, chemical intermediates, etc.), thus having great impact on the environment. Industrial processes may generate VOC emissions to the atmosphere, so prevention and control is becoming a very important issue in the petroleum industry.

Mechatest deliver VOC detection systems to include in our sampling system cabinets, read more about the possibilities of VOC monitoring detection systems.

Mechatest Fixed Volume Liquid Sampler Configuration MBS-D1

Mechatest Gas Sample Probe

Importance of Sample Probes

Sample probes are very important and mostly an underestimated part of the sampling system.
Why you should use sample probes;

  • Free First Filtration Effect!
  • Faster Response (< Lag Time)
  • Representative Sample, better results!
  • Moisture Filtration (fallback) Principle
Mechatest Retractable Sample Probe

Sample Probes Types

  • Open Probes
  • Filter Probes
  • Multiport Probes
  • Heated Probes
  • Fallback Probes
  • Small Bore Gas Probes
  • Retractable Sample Probes
  • Isokinetic Steam Probes

Probes Calculating Services

  • Lag Time
  • Velocity
  • Probe Vibration
  • Moisture Fallback Effect

Liquid Sample Receiver Types

The Sample containers come in a variety of shapes, sizes, and materials. Select the proper container based on the product to be sampled to ensure that there will be no interaction between the product sampled and the container that would affect the integrity of either. The sample receiver should be designed to facilitate the homogenisation of the sample in the laboratory so that a representative sub-sample may be drawn from it. All volatile samples of petroleum and petroleum products shall be protected from evaporation.

Suitable for samples with;

  • Materials: Glass (clear, amber, cobalt blue or vinyl coated), PTFE, PFA, Polypropylene, LDPE, Aluminium, Stainless Steel
  • Bottle types: Schott Duran with GL32 and GL45 thread, Dopak, ExxonMobil (other client bottles on request)
  • Bottle Volumes: 2 mL, 10 mL, 25 mL, 50 mL, 100 mL, 250 mL, 500 mL, 1000 mL (other volumes on request)

sample bottles

Suitable for samples with;

  • Process pressure < 8 barg
  • Vapor pressure < 0.7 barg
  • High pressure application > 8 barg suitable with Fixed Volume Sampler Type.
Liquid Sample Bottle Receiver types - Mechatest

sample cylinder

Suitable for samples with;

  • Process pressure > 8 barg
  • Vapor pressure > 0.7 barg

Glass bottles are suitable for low pressure sample test and storage requirements. Clear glass bottles can be easily examined visually for cleanliness, and allow for visual inspection of the sample for haze (cloudiness), discoloration, free water, and solid impurities. Glass bottles are used for the collection acids, caustic products, hydrocarbons, aromatics and water. The amber (brown) glass bottle affords some protection to the samples when light may affect the test results.


Plastic Bottles in general are made of suitable material may be used for the handling and storage of caustic products, diesel oil, fuel oil, lubricating oil and water.

Plastic bottles should not be used for gasoline, aviation jet fuel, kerosene, crude oil, white spirit, medicinal white oil, or other petroleum products unless testing indicates there is no problem with solubility, contamination, or loss of light components. In no circumstances shall nonlinear (conventional) polyethylene containers be used to store samples of liquid hydrocarbons. When sampling from a flowing pipeline, electrical continuity between the pipeline and the sample container via the connecting pipework can occur. Do not use plastic containers since they are non-conductive and will not dissipate static electricity.


  • Hot or Cold samples can be collected in insulated bottles.
  • All these bottle types are with screw cap and septa.