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Water or air, measure H2S where it matters – right at the source.


Meet the new GS1440 and GS1440EX hydrogen sulfide sensors from Hach. Whether in water or air, you will have the direct H2S measurement you need to optimize your H2S treatment process and proactively control H2S before it causes issues.

Catalog No. Product Net Price
HACH1W1100 Analog Interconnect Extension Cable 5 
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HACH5794300 Ball Float Mount Kit 762 
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  • Special Notes
  • for use in tanks or open channels with variable water levels
HACH6131000 Ball Float Mounting Kit, digital DO & pH 933 
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LZU301.99.00000 Stainless Steel ball valve for TSS EX1 sc Triclamp 2430 
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  • Material
  • ball valve SS 1.4408; 2" welding nippel SS 1.4571.
  • Pressure Range
  • 6 bar
  • Special Notes
  • Ball valve has 2" female thread and welding nippel has 2" male thread.
  • Weight
  • 5.5 kg
  • What's included?
  • Stainless steel ball valve armature, 2" nippel (L = 150mm) and safety stop. Triclamp and gasket are included in TSS EX1 probe part number.
LZU300.99.00000 Stainless Steel ball valve for TSS sc TriClamp 2430 
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  • Material
  • ball valve SS 1.4408; 2" welding nippel SS 1.4571.
  • Pressure Range
  • 6 bar
  • Special Notes
  • Ball valve has 2" female thread and welding nippel has 2" male thread.
  • Weight
  • 5.5 kg
  • What's included?
  • Stainless steel ball valve armature, 2" nipple (L = 60mm) and safety stop. TriClamp and gasket are included in TSS probe part number.
HACH43015M Base Plate for Standard Wading Rod, English/Metric 222 
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HACH9073600 Lithium-Ion Battery 143 
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HACH76G9912 Bom-Ball Float 236 
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HACH29552A PTFE membranes (32 mm diameter) 50 µm thickness 142 
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  • Material
  • Membrane: PTFE
LZX440 Probe cable extension, 20 m Special offer 
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