About Harvard Apparatus Stronghold Products

This innovative, flexible, and totally integrated group of clamps, connectors and lattices meets many laboratory requirements. The nylon and glass fiber injection molding process creates an extremely strong corrosion free line of products. The high melting point of 221°C and chemical resistance makes these products the perfect material for lab settings.

  • Precision injection molded nylon with 30% glass fiber reinforcement provides enormous strength at a great saving in weight. 
  • There is absolutely no corrosion possible. 
  • High melting point of 221°C 
  • Good resistance to chemicals, salt solutions and most solvents. 

Stronghold Positioners, Stands & Accessories

Small Clamps Two moving jaws with fixed screw action, clamping range from completely closed to 16 mm (0 to --> Learn More
Medium Clamps Two moving jaws with fixed screw action, clamping range from completely closed to 45 mm (0 to --> Learn More
Large Clamps Two moving jaws with fixed screw action, have a clamping range from 3 to 85 mm (1/8 to 3-1/3 in) --> Learn More
Condenser Clamps Two clamps that are mounted vertically 100 mm (4 in) apart to hold condensers, large columns, --> Learn More
Burette Clamps The single burette clamp has two small clamps mounted vertically 100 mm (4 in) apart to hold --> Learn More
Column/Tube Clamps Two medium clamps mounted vertically 100 mm (4 in) apart to hold  columns, large --> Learn More
Small Vice/Board Clamp Securely holds thin sections such as PCBs, slides, rulers, filters, targets, boards, --> Learn More
Closed Connector Used to firmly mount the stem of a clamp horizontally on a vertical lattice rod or stand. The --> Learn More
Open-Sided Connector Used to mount two rods at right angles or to mount a clamp stem horizontally on a vertical --> Learn More
Tee Connector Used to mount clamps and adapters that have a male connector to vertical lattice rod. One end --> Learn More

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