BAIRD &TM10CK (LONDON) LTD. 



22' Drinking Water Outfit, consisting of small Colorimeter with light protection device and 

 i gauged wedge each for ammonia, nitrous acid, sulphuretted hydrogen lead iron CODDBT 



and 2 wedges, all parts in velvet lined, polished wooden case . ' each' 



23 1 Small Colorimeter for Drinking Water with light protection device, 2 troughs and r 

 gauged wedge each for ammonia, nitrous acid and iron (without case, etc.) each 



24' Chemical Colorimeter, with only one gauged wedge (or either chromium, copper, titanium 



manganese, vanadium, iron, iodine, or copper, large mode- . . 



25 ! 



26 



each 

 Chemical Colorimeter, large model, with one empty stoppered wedge of 16 cm to 



be calibrated by the user . . . . . . . . e ' ac )j 



Chemical Outfit, consisting of small Colorimeter with 12 cm. gauged wedge- i<n 

 chromium, iron, iodine, copper, titanium, and vanadium, 2 troughs, all parts m 

 velvet -lined, polished wooden case . . . . . . eac j, 



27' Chemical Outfit, same combination as No. 826, but with large Colorimeter and large 



wedges of 16 cm. 



Accessories and Spare Parts. 

 12 cm. Wedge, empty, for small Colorimeter, not stoppered . . each 



15 cm. Wedge, filled but not calibrated 

 12 cm. Wedge, filled and calibrated 



12 cm. Wedge, empty, stoppered 



16 cm. Wedge, empty, for large Colorimeter, not stoppered .. 

 16 cm. Wedge, filled, but not calibrated 



16 cm. Wedge, filled and calibrated 



16 cm. Wedge, empty, stoppered 



Spare Trough for small model, usual size 



Spare Trough for small model, extra long (for ammonia and lead) 



Spare Trough, small model, stoppered (desirable, but not absolutely necessary for 



iron) . . . . . . ... . . each 



Spare Trough, for large model 



Spare Trough, extra long for large model (for ammonia and lead) 



Spare Trough, for large model, usual size, but stoppered 



Reserve Pipettes 



Helmholz Double Plate, small 



Helmholz Double Plate, large 



Subsequent adaptation of light protection device, if a Colorimeter is to be adapted 



for examination of drinking water, inclusive of extra long trough and holder for it 



each 

 Detailed instructions are supplied with each Colorimeter. 



A special wedge is required for each examination, and it is requested to state exactly what 

 txaminations are to be carried out on the apparatus, also whether the wedges are to be empty, 

 illed, or filled and calibrated. Apparatus which are to be calibrated by the users, are as a rule, 

 upplied with empty wedge, which can of course, be used for every kind of examination. 



128' Haemometer, Dr. E. Lloyd Jones', for ascertaining the specific gravity of the blood in 

 health and disease, as first described by Prof. Roy, F.R.S. 



A. Price, with solutions, pipettes, etc. . . . . . . . . . . each 



B. Price, without solutions 



C. Pipettes, per box of two dozen 



D. Refilling set of twenty bottles 



The above outfit consists of a japanned metal cabinet 9 by 4^ by 5 in., containing twenty 

 ,'lass stoppered bottles of solutions of varying specific gravity 1,030-1,075, two trial jars, puncturing 

 ancet, and a supply of capillary pipettes and indiarubber tubing in the lid. The compartments 

 ire provided with clip to keep bottles firmly in position. 



A. 



I!. 

 C. 

 D. 

 E. 

 F 



(;. 



H. 

 K. 



L. 

 M. 



N. 



O. 

 P. 



Q. 

 K. 

 S. 

 T. 



7 10 

 400 

 2 14 

 280 



7 10 

 8 15 



060 

 090 

 16 

 070 

 070 

 10 

 17 

 080 

 023 

 636 



3 

 2 9 



4 















040 



009 



036 



040 



100 



440 

 330 

 026 

 150 



] CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



173 



