High solids Gem Cones are for samples with high dissolved solids (up to 20%). This cone spray nebulizer allows you to analyze samples with higher solids concentration than is possible with a Cross-Flow nebulizer. Gem Cone nebulizers require an end cap for use with Ryton Scott Spray Chambers. High solids version. Requires N0680504 end cap for use with Scott spray chambers and N0770336 tubing.