Burner, liquid petroleum, propane type, with 

 complete set of tips. 



Carboy, plastic, 5 gal. 



Clamp, apparatus. Assorted. 



Cork borer set, brass with handles. 



Cylinder, graduated, plastic or glass*, capa- 

 city : 10, 25, 100, and 500 ml. 



File, triangular, 4-inch. 



Filter paper. 



Filter pump (aspirator) , brass, with threaded 

 filter pump coupling. 



Flask, Erlenmeyer, narrow mouth, glass*, 

 capacity : 125, 250, 500 ml. 



Flask, volumetric, to contain. Class A, glass*, 

 capacity : 100, 250, 500, 1,000, and 2,000 ml. 



Forceps. 



Funnel, plastic. Assorted sizes. 



Gloves, rubber or plastic. 



Hotplate. 



Lamp, titration, flourescent daylight. 



Pinchcock, screw and spring type. 



Pipe cleaners. 



Rod, stirring. 



Rod, threaded support, with connectors and 

 feet. 



Spatula, stainless steel. 



Stirrer, magnetic. 



Stirring bar, magnetic, teflon coated. 



Stopper, rubber, regular form. Assorted sizes 

 00 through 13. 



Thermometer, laboratory grade. 



Tongs, beaker. 



Tongs, crucible, stainless steel. 



Towels, paper. 



Tubes, connecting, T- or Y-shape, glass* or 

 plastic. 



Tubing, flint glass. 



Tubing, Tygon, plastic. 



Tubing, latex. 



Watch glass, glass*. 



Wiping tissues, disposable paper, absorbent, 

 Imt free. 



Two things that are very important in operat- 

 ing a shipboard laboratory are neatness and 

 cleanliness. A sloppy laboratory can quickly 

 become chaos. As soon as a piece of equipment is 

 used, it must be cleaned and returned to its prop- 

 er place of stowage. Considerable time can be 

 lost searching for a particular flask or graduate 

 only to find it broken or too dirty to use. Chipped 

 glassware is dangerous. Avoid using it. Cloth- 

 ing can be ruined and skin burned if spilled 

 acids are not cleaned up immediately. 



H-5 General Laboratory Precautions. — Al- 

 though each method of analysis has detailed 

 instructions for handling and cleaning its par- 

 ticular equipment, the seagoing chemist must 

 familiarize himself with basic shipboard chem- 

 istry laboratory precautions. The chemist will 



*Heat resistant borosillcate glass is preferred. 



H-2 



at times have to handle chemicals that are cor- 

 rosive and toxic. Because of the dangers in- 

 volved, extreme care must be taken at all times 

 when handling these chemicals. Most laboratory 

 equipment is delicate and some is specially made 

 and difficult to obtain. Costly damage and per- 

 sonal injury can result if such material is 

 handled carelessly. It is obvious, therefore, that 

 the shipboard laboratory is a space in which 

 only qualified persomiel should be authorized. 

 The laboratoiy should never under any circum- 

 stances be used as a general passageway or 

 lounge. 



The shipboard laboratory must be well venti- 

 lated to remove any toxic vapors created by 

 chemicals. As several types of equipment for sea 

 water analysis are calibrated at 20° to 25° C. 

 (68° to 77° F.) , it is desirable that the laboratory 

 be kept in this temperature range. 



Several types of titration analyses utilize 

 color change end points. For this reason, it is 

 important that the lighting of the laboratory be 

 of high quality. Fluorescent lights of the day- 

 light type are recommended. 



H-6 Handling and Storing Laboratory 

 Glassware. — A large portion of laboratory 

 equipment used at sea consists of delicate glass- 

 ware. Although these beakers, graduates, bu- 

 rettes, pipettes, flasks, etc., are each designed for 

 particular functions they unfortunately are of 

 very awkward shapes and sizes for stowage. It 

 is recommended that only those pieces of equip- 

 ment in fairly frequent use be arranged in sea 

 racks. The remaining spares and seldom-used 

 pieces should be wrapped liberally with soft 

 packing material and stowed in drawers or bins 

 so they will be unaffected by motion of the ship 

 in rough weather. Do not crowd glassware in 

 drawers. 



H-7 Stowage of Chemicals. — Chemicals 

 should be stowed in bottles or jars with screw 

 caps or stoppers and packed in cabinets or draw- 

 ers with dependable latches or locks. Wrap 

 fragile bottles with soft packing material to pre- 

 vent contact with one another and to keep them 

 from moving about with the motion of the ship. 

 Liquids should be stowed upright in tightly 

 capped bottles in sea racks or compartmented 

 bins. 



Strong acids and bases should be stowed in 

 racks or bins that are well ventilated and 

 equipped with a drain to dispose of spilled solu- 

 tion in the event of breakage. This drain sliould 

 lead to an overboard discharge. One method is 

 to construct a rack at the back of one of the 

 laboratory sinks that will drain into the sink. 



H-8 Handling Chemicals and First Aid 

 Measures. — When handling chemicals, a lab- 

 oratory apron or coat should be worn. When 



