FROM C O L E M A N . . . —DATA
NO; in srt Measure water-soluble nitrates quickly and simply. Technique consists of mixing a known weight of soil with a known volume of solution — the analysis is made with an IONALYZER Nitrate Electrode and a Model 404 Specific Ion Meter. Read nitrate DI RECTLY in parts per million on the special ion scale, regardless of solution color or turbidity. This completely portable system allows on-the-spot field measurement with laboratory precision. Another example of the new technology for chemical measure ment — from ORION. Orion Research Inc 11 Blackstone St Cambridge, Massachusetts 02139 Circle No. 36 on Readers' Service Card
FIRST CLASS Permit No. 1 5 3 8
NEW READOUT—
Features unique automatic referencing & automatic conversion to linear absorbance
New York, Ν. Υ.
BUSINESS REPLY CARD NO P0STA6E STAMP NECESSARY IF MAILED IN THE UNITED STATES
POSTAGE WILL BE PAID BY
ANALYTICAL CHEMISTRY PUBLISHER'S DATA CENTER, INC. 132 WEST 31ST STREET NEW YORK, Ν. Υ.
MODEL 41 DATA READER Now you can read Model 111 and other Spectrophotometers, pH Meters and Computer Sys tems twice as fast, three times more accurately with the Model 41 Digital Data Reader than by reading the same data from dials or scales. Reference value is set automatically by a touch of the SET-REF bar. It is no longer nec essary to adjust your meter to exactly 100%T or 0.00A. The Model 41 automatically converts %T output to digital linear absorb ance readings. Request Bulletin A -324.
10001
1 J T - ( N r O < $ U Î Ç D N O O Q ) O r - Μ ( Ό « ι Ο ΐ Ο Ν Ο Ο Ο ) Ο ι - CJCO^-lA O O O O O O O O O r i - t - T - r - i - r T ' i - i - N N N N N N
oc •» S? ïo
PO PO PO P O P O P O P O P O P O P O P O C O P O P O C O P O C O C O P O P O P O C O P O P O PO
S2
cj ο
ο § 0O S_ bj r r I r-
«S S ω ζ
cor^çp«Q^çNM2in»i^ooo5çpr-çjco2«coi^ooçnç2 i ^ r ^ r ^ r ^ o o o o o o o o o o c o o o c o o o o o ç o on o o c o c o o f t c o ç f t ç o o f t o CJOJC^OJOJOJOJCJCJOJCsIOJOJOJCJOJOJCJOJOJCJCJCJOJPO
GO CO
CJ y— T* i n ι*-, C J CJ »(&(0(0a>(0«0j(>JCMCMCJCJC>j(>JCNJC^cjcJCj ^ - w c o ^ i O i O N e o c n o T - c j M i t i n i O N e o w o » - C J PO * r m O O O O O O O O O r - f f - t - F - ^ i - r - f - i - N C M N C N N N C>JOJOJOJOJOJ0JCJ0JC^OJOJOJOJOJOJOJCJOJOJOJOJOJOJOJ
S
Γ»·· Γ-· r · n - OO OO OO OO 0 0 0 0 OO OO OO 0 0 CT> C7> OO ©ft OO OO CO Co CO GO O
CO 0 0 0 0 PO OO «
m
CM Ν CJ Q Tt A
«Ν CJ to
i— CD c o i— C J CD CJ CO
^ in
GO ί*· Ο 3
T»cjpo«inco(^ooc»o*-c^co^incor^ooeoo«—cjco^-ιη in>oioinLOininiotn(O(O(0(O(ou)(D
