Document aBRVgk3D5dYQd1ZBaaenK7zGe
-A
<3 )\ |N S ^
D ecem b er 30, 1974
M r. Ray R. K ram m es W hittaker, C lark & D aniels, Inc. 1000 C oolidge S tre e t Sooth P la in fie ld , New J e r s e y 07080
D ear M r. K ram m es:
DTA an a ly sis has been com pleted on your 7 sam p les of coded ta lc s as r e q u ested by y o u r P , O. N J 19722. T he o rig in al th e rm o g ra m s a re enclosed.
C onditions under w hich the sam p les w e re run a re as follow s:
Instrum ent: P u rn ac e; Sam ple H older: S am ple W eight: R eferen ce M aterial: A tm osphere: H eating R ate: S ensitivity: T em perature Range:
R . L . Stone Co. DTA u n it M odel LA -X Y H F - ID F 1IB R 2N 1Z 20 m g A lundum H elium , 40 cc /m in . 24 C /m in . 150,qv to approx. 500C , 40^v to approx. 900C
A m b ie n t t c 100C C
Follow ing the guidelines given in th e m ethod you sent, we found that the condi tions liste d above w e re adequate to obtain a d etectab ility of ch ry so tile at the 1% l e v e l .
U nder th e se conditions the tw o stan d ard sam ples snow th e th e rm a l tra n sitio n s c h a ra c te ristic of c h ry so tile, an enaotherm at about 650C and an exotherm at a b o u t 820 C . S a m p le F c o n ta in in g 1;% c h r y s o ti l e e x h ib its a s m a l l b u t d e te c ta b le ex o th erm , and looking at your objective and th e th e rm o g ra m s of th e re m a in d er of y o u r s a m p le s , th is d e te c ta b ility is s u ffic ie n t. D u p licate ru n s w e re m ad e on your tw o stan d ard sam ples to en su re repro d u cib ility .
PLAINTIFFS EXHIBIT
WCD-206
[ ;
! r I
DeBELL & RICHARDSON TESTING INSTITUTE ENFIElD, CONN. 06082 PHONE 203 749-8371
LoGiudice/WCD/0291
M r. R ay R. K ram m ee W hittaker, C lark & D aniela
%Vc ,H S ^
2- -
D ecem ber 30, 1974
U sing y o u r tw o stan d ard sam p les as re fe re n c e s , th e re s u lts of th e rem aining sam ples a re as follow s:
D ehydroxylation
Sam ple
E ndotherm
ti'SC'T'OF - S ta n d a r d ? A U y P r o s e n t
/, H - S ta n d a r d BUTTS' P r e s e n t
D p A /sry
P resen t*
E May be p resen t
G M ay be present
I P /A 'A A /
M ay be p resen t
'/ TA/LC J
Not detectable
R ecrystallization E xotherm
P resent P resent P resen t* Not detectable Not detectable Not detectable Not detectable
A pprox. % C hrysotile
1 2 '1 E ess than 1 L ess than 1 L ess than 1 L ess than 1
W here th e endotherm is liste d as "m ay he p re se n t", this is due to the probable p re s e n c e of in te rfe rin g su b sta n c e s w hich te n d to m a sk a c le a r en d o th erm in the d e s ire d a re a . Since both th e endotherm and exotherm m u st be p re se n t for c h ry so tile to be p re se n t, th en it can be sa id th a t at th is d etectab ility , assum ing no i n t e r f e r e n c e , t h a t n o n e o r l e s s th a n 1% c h r y s o t i l e is p r e s e n t in s a m p le s E , G, I a n d J . O nly s a m p le D m a y h a v e a p p r o x im a te ly 1% c h r y s o ti l e , a s s u m in g that th e p eaks involved a re not due to other m a te ria ls p re sen t.
If th e re a r e any questions concerning th e se re s u lts , p le a se fe el fre e to contact us.
M rs . D'U-hyiySGreene, C h e m ist A nalytical L aboratory
A pproved
V -y -
1
M yer E zrin , P h. D. , M anager
A nalytical D epartm ent
^A ssum ing no in terfe ren c e
cag E nclosures
LoGiudice/WCD/0292
PROGRAM RATE
W E iG H T
>- a r "C/MIN GAfN
/,
J& M h .
----- ;---------i. r r 7 _... s m
'E F .
s -J w r .
V -J.& A T M O S P H E R E .. ' / '
MAT* - /* fJ .lS A /J > /r f - . S & . j r r * ` .S ^ L
7 \ `CS\ STK. N O .-13675-0001 s^"
\3 f FRESSURE ^ - %"
***> * & & & * r
-
AV , _ _ r - C / H *
y 2 fe 5
SAMPLE
h o ld er
'_
,'
FLOW
< *y 9 T /s C S .
// y * w + r
/y /
-
' VZ'r 'Ii.&;?<y.--
V - K-C/A ' y y C
so
` -100 1> I
V
I SO
20
100
2or
-L i
BCO
400 500
_i_
LoGiudice/WCD/0293
LoGiudice/WCD/0294
LoGiudice/WCD/0295
PROGRAM RATC
V
C/Mlil
AT
GAlht
<^?Q I? / <r}^
5TONE-PR6MCO
uM L ?
MAfu /jU/)/i/s7l ' " ' s e - o A ..... --
..
I SAMPLE
_
. S C` GAS
r . : <c/ftfe H0LDEK S X * 4 2 / S / J
FLOW V # e c / t
(
S6tt4
beBELL & RICHARDSON, INC
ENFIELD,- CONNECTICUT 06082
; gK0^rVK
LoGiudice/WCD/0296
0___ 1__ 1 0
1 1
.
1rfi
100
.li 200
i- '
____ 1
.iii . " i
' "i
10Q
200 , 1
40 Q
.i
____ L l _ ______ __________
300 l.i.
, i |-
400 \,
s bo '
T
__________ L
__ 1------
!
K -C /A
C
250
500 . ! ;.
.. * 100C 1
Y- f .
-V PROGRAM RATE
OH
_/ o 7l /
WEIGHT V * ? ^
7
f i g mat! .
Tu
a T yaT > - w * ' ' *
' r SAMPLE -
,, ,
-C/MIW GAIN
/
,W ,
Cfi. HOLDER / A ^ ^ ?
^ Q Z ) C
5TONE--PRMCO
AAory ? K 8 I
ATMOSPHERE r 'v A K
GAS . /
.
PLOW Y C C / ^ ^ O
-- PRESSURE .
1 > % V '
/ * * * Y $ '3
7 7 T.
r ;
DeBELL & RICHARDSON, INC,
LoGiudice/WCD/0297
',0 0
__ L_
200
_J__ i
E r V ... ISO
II 300
~ i
K-C/A ' =0
LoGiudice/WCD/0298
iUDtJi:C;i ,
00 --M y
o *r-, <c
eSjuii.
tv ty/-i oo0 'o
Z u_
Ouo r <3j
eli
<
8T
U or.
Zz
5
5
> sz
V A< "
tuoi. Q v&ox
Ctl:
4* 4p
a<O;w OiO-H<z Htfji 1V
LoGiudice/WCD/0299
.ibo
Q
s o i eoo
SP
rMnArT. L /i
/V e ~&
a r A S Z f^ te / k v >^ rv O K .,
GA`N
i a j a a S C S ` ^ ER
aJ/ S
GFLAOSW j/ fr y c / y n sslS Wf f Jl VC UVI
eBELL & RICHARDSON, IN C
ENflELD, CONNECTICUT 0608i
/ '/ A 's y
erat/i-ev "m
c
0 ;; .
-1 -
i. ,
SD ],
100
, t ] , ' -, , . i
> ^ T .~
' .
,
10 jl
20
,* "
f
t * . v ____ L - .
x
K--G/A '0
,
. ______L ___________
150 i1
30?
200
____________i___________
11
t
......
0
..
_____ i_____ 1_____ i_____ i-------- i _ J ------------------ 1-------- x --
-25
i l l -- ------
,fr ;
500
t--------:-------- L _ j -------- 1--------- i ~ - j --
r ^ , W -.-,, --------- 3-----------------
LoGiudice/WCD/0300
LoGiudice/WCD/0301
LoGiudice/WCD/0302
LoGiudice/WCD/0303
LoGiudice/WCD/0304