Customer Support: +1 416-401-8730

Login to i2i Subscription Intertek.com
  • There are no items in your cart
Please enter a keyword to search
Advanced search

BS ISO 6849:1996

Current
Current

The latest, up-to-date edition.

Photography. Processing wastes. Determination of boron
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-15-1997

Publisher

British Standards Institution

Defines two methods for determining boron in photographic processing wastes. The first method estimates borates by titration of the boric acid-mannitol complex. Alternatively, a spectrophotometric technique utilising methylene blue can be used, in the boron range of 0,1 ml/l to 1,0 mg/l which is the most likely concentration to be found in photographic processing wastes.

This International Standard specifies two methods for the determination of boron in photographic processing wastes. The first method is the estimation of borates by titration of the boric acid-mannitol complex, which is a stronger acid than the boric acid from which it is formed. It is suitable for boron concentrations of 0,1mg/l and higher. In the range 0,1mg/l to 5mg/l, phosphate is removed by precipitation by lead acetate. In the range 1mg/l to 100mg/l, the sample is diluted 25 times; this eliminates phosphorous interference if the phosphorous concentration is below 500mg/l.

The second and alternative method is a spectrophotometric technique using methylene blue and is useful in the boron range of 0,1ml/l to 1,0mg/l, this being the concentration likely to be encountered in photographic processing wastes.

Committee
CPW/42
DevelopmentNote
Supersedes 90/44773 DC. (03/2005) Reviewed and confirmed by BSI, August 2016. (07/2016)
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO 6849:1996 Identical

ISO 385-2:1984 Laboratory glassware Burettes Part 2: Burettes for which no waiting time is specified
ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 835-4:1981 Laboratory glassware Graduated pipettes Part 4: Blow-out pipettes
ISO 6353-1:1982 Reagents for chemical analysis — Part 1: General test methods
ISO 1042:1998 Laboratory glassware One-mark volumetric flasks
ISO 648:2008 Laboratory glassware — Single-volume pipettes
ISO 4788:2005 Laboratory glassware Graduated measuring cylinders
ISO 835-2:1981 Laboratory glassware Graduated pipettes Part 2: Pipettes for which no waiting time is specified
ISO 10349-1:2002 Photography Photographic-grade chemicals Test methods Part 1: General
ISO 5667-2:1991 Water quality Sampling Part 2: Guidance on sampling techniques
ISO 5667-3:2012 Water quality Sampling Part 3: Preservation and handling of water samples
ISO 385-1:1984 Laboratory glassware — Burettes — Part 1: General requirements
ISO 835-3:1981 Laboratory glassware Graduated pipettes Part 3: Pipettes for which a waiting time of 15 s is specified
ISO 5667-1:2006 Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques
ISO 6353-3:1987 Reagents for chemical analysis — Part 3: Specifications — Second series
ISO 835-1:1981 Laboratory glassware Graduated pipettes Part 1: General requirements
ISO 385-3:1984 Laboratory glassware — Burettes — Part 3: Burettes for which a waiting time of 30 s is specified

View more information
US$143.74
Excluding Tax where applicable
USD
CAD
CHF
CNY
DKK
EUR
GBP
HKD
IDR
INR
JPY
KRW
MXN
NOK
NZD
SEK
SGD
USD
ZAR
Hardcopy - English
PDF - English
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

or

Get in touch with us