• Constant Temperature Hydrometer Bath, 6 and 12-Place

Constant Temperature Hydrometer Bath, 6 and 12-Place

For density, relative density (specific gravity) or API gravity determination of crude petroleum, liquid petroleum products and mixtures of petroleum and non-petroleum products.

  • 6 and 12 position models available
  • Conforms to ASTM D1298, D6074, D6158 and related specifications

A versatile constant temperature bath designed for density/gravity determinations of petroleum products at temperatures of up to 195°F (90°C), and also for Reid Vapor Pressure determinations using immersion bombs. Digital temperature control provides quick temperature stabilization without overshoot and the unit is protected by an overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point.

Conforms to the Specifications of:

ASTM D1298, D6074, D6158; ISO 3675


  • K64600/K64690: 12 Hydrometers
  • K64610/K64619: 6 Hydrometers


  • Range: Ambient to 221°F (105°C)
  • Control Stability: ±0.09°F (±0.05°C)

Bath Medium:

  • K64600/K64690: 16.1 gal (60.9 L) white technical oil
  • K64610/K64619: 9.9 gal (37.5 L) white technical oil

K64600/K64610: 115V 60Hz, Single Phase, 10A

K64690/K64619: 220-240V 50/60Hz, Single Phase, 5A

  • K26410 Hydrometer Cylinder
      Borosilicate glass, 15 ½" l x 2" dia. with 2 ½" lip
  • 250-000-61F ASTM 61F Thermometer - Range: 90 to 260°F
  • 250-000-61C ASTM 61C Thermometer - Range: 32 to 127°C