Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981
Alligator Rivers Region - Regional Surface Water Quality Monitoring, Volumes 1,2,3 (Plus draft)
Northern Territory. Department of Transport and Works. Water Division, Environmental Section
E-Publications; E-Books; PublicationNT; Report ; 49/1983
At head of title: Water Division, Dept. of Transport & Works, Northern Territory. "April 1983".
Water quality -- Northern Territory -- Alligator Rivers Region; Hydrology -- Northern Territory -- Alligator Rivers Region
Northern Territory Government
Report ; 49/1983
3 volumes. ; 30 cm
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
https://hdl.handle.net/10070/672725 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_1.pdf]; https://hdl.handle.net/10070/672727 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_2.pdf]; https://hdl.handle.net/10070/672729 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_3.pdf]
Technical Report WRD83049 Viewed at 14:07:10 on 29/07/2010 Page 91 of 440. I I I I I I I I I I I I I I I I I I I I 90. ACID ~-'JASHING EQUIPNENT FOR ~FACE ~lETilLS ' -------------------------- l'HINCIPLE ?+11 equipmen-t used ln trace metal tvork must be acid ~:ashed before using. The acid lcaches O'-lt the trace metals from the surface of the con taincr and th*2 metals remain in the acid solution.. The acid is thoroilghly rc;novcd by rinsing with milli-Q super pure wate~~ 1. Ensure surface is thoroughly wetted with acid, no bubbles .. 2. All surfaces to come into contact with sample must be acid washed and Utltouclled by any thing but milli-Q water, care being taken not to touch even with gloves. If int0rior of container comes in contact with glovesr floor bench etc. it must be placed back in acid bath for 24 hours~ 3~ Milli-Q water containers and wash bottles initially must be acid washed before use. No other ~.'Ia ter is to be used in them. Store in clean place, rinse out bottle and tip before use. Don 1 t touch tip or tt1be -etc. when filling. If any doubt to cleanliness acid wash for 24 hours. Never let acid dry on surface of containers, if this happens replace in bath for 24 hours. 1. !>.ll containers are to be soaked in 62'-! !.':i tric acid for one week. 2. Thoroughly rinse with milli-Q water at or more. (between 10-20 times) least ten times ROUTINR Wl~SHI;:JG 2. After initial washing equipment ntay be placed in 10% hydroc!iloric acid bath for 24 hou.rs (or overnight) provJ.alng nothiE,:;: stronger than 10 ppm solution has beeP.. used in theat, if so soak in 6rvi for a ;veek. If containers are greasy or dirty soak in 10~ decon 90 overnlgnt. Thoroughly rinse with distilled ater, place in 10% HCl bath O'fernight and thoroughly rinse \Vi th milli-Q water (between 10-20 times). 3.. Ri:..se all equi9m-en t with distilled t-1.3. ter be fo:re placing in bath. 4. Change acid in bath when it becomes dirty (6-8 weeks) rouqhlv make UP a 10% solution of hvdrochlo::ic acid (!\.R.) - - - J. in distilled water.