{"id":86837,"date":"2024-10-18T05:49:11","date_gmt":"2024-10-18T05:49:11","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d7315\/"},"modified":"2024-10-24T20:13:42","modified_gmt":"2024-10-24T20:13:42","slug":"astm-d7315","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d7315\/","title":{"rendered":"ASTM-D7315"},"content":{"rendered":"

ASTM D7315-12<\/h3>\n

Historical Standard: Standard Test Method for Determination of Turbidity Above 1 Turbidity Unit (TU) in Static Mode<\/h4>\n
\n

ASTM D7315<\/h4>\n

Scope<\/strong><\/p>\n

1.1 This test method covers the static determination of turbidity in water. Static refers to a sample that is removed from its source and tested in an isolated instrument. (See Section 4.)<\/p>\n

1.2 This test method is applicable to the measurement of turbidities greater than 1.0 turbidity unit (TU). The upper end of the measurement range was left undefined because different technologies described in this test method can cover very different ranges. The round robin study covered the range of 0\u2013<\/span>4000 turbidity units because instrument verification in this range can typically be covered by standards that can be consistently reproduced.<\/p>\n

1.3 Many of the turbidity units and instrument designs covered in this test method are numerically equivalent in calibration when a common calibration standard is applied across those designs listed in Table 1. Measurement of a common calibration standard of a defined value will also produce equivalent results across these technologies.<\/p>\n

1.3.1 In this test method calibration standards are often defined in NTU values, but the other assigned turbidity units, such as those in Table 1 are equivalent. For example, a 1 NTU formazin standard is also a 1 FNU, a 1 FAU, a 1 BU, and so forth.<\/p>\n

1.4 This test method does not purport to cover all available technologies for high-level turbidity measurement.<\/p>\n

1.5 This test method was tested on different natural waters and wastewater, and with standards that will serve as surrogates to samples. It is the user’s responsibility to ensure the validity of this test method for waters of untested matrices.<\/p>\n

1.6 Depending on the constituents within a high-level sample, the proposed sample preparation and measurement methods may or may not be applicable. Those samples with the highest particle densities typically prove to be the most difficult to measure. In these cases, and alternative measurement method such as the process monitoring method can be considered.<\/p>\n

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Refer to the MSDSs for all chemicals used in this procedure.<\/span><\/p>\n

TABLE 1 Summary of Known Instrument Designs, Applications, Ranges, and Reporting Units<\/p>\n

Keywords<\/strong><\/p>\n

calibration; calibration turbidity standard; calibration verification; measurement; nephelometric turbidity; ratio turbidity; turbidimeter; turbidity; turbidity standards<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 13.060.45 (Examination of water in general)<\/p>\n

DOI:<\/strong> 10.1520\/D7315-12<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology <\/td>\n<\/tr>\n
2<\/td>\nTABLE 1 <\/td>\n<\/tr>\n
3<\/td>\nSummary of Test Method
Significance and Use <\/td>\n<\/tr>\n
4<\/td>\nInterferences <\/td>\n<\/tr>\n
5<\/td>\nApparatus
FIG. 1 <\/td>\n<\/tr>\n
6<\/td>\nFIG. 2
FIG. 3
FIG. 4 <\/td>\n<\/tr>\n
7<\/td>\nFIG. 5
TABLE 2 <\/td>\n<\/tr>\n
8<\/td>\nPurity of Reagents
Reagents <\/td>\n<\/tr>\n
9<\/td>\nSafety
Sampling and Sample Preservation <\/td>\n<\/tr>\n
10<\/td>\nCalibration and Calibration Verification
Procedure for the Measurement of High-Level Static Turbidity <\/td>\n<\/tr>\n
11<\/td>\nReport
Quality Control\/Quality Assurance <\/td>\n<\/tr>\n
12<\/td>\nTABLE 3
TABLE 4 <\/td>\n<\/tr>\n
13<\/td>\nTABLE 5
TABLE 6 <\/td>\n<\/tr>\n
14<\/td>\nPrecision and Bias
TABLE 7 <\/td>\n<\/tr>\n
15<\/td>\nFIG. 6 <\/td>\n<\/tr>\n
16<\/td>\nKeywords
X1. DISCUSSION OF ROUND ROBIN RESULTS
X1.1 Introduction
X1.2 Study Conclusions
X1.3 Suggestions to Improve Data Quality in Turbidity Measurement of Environmental Samples
X2. SELECTION CRITERIA FLOWCHART FOR HIGH-LEVEL TURBIDITY MEASUREMENT
X2.1 Selection Criteria Flowchart for High-Level Turbidity Measurement <\/td>\n<\/tr>\n
17<\/td>\nX3. CLEANING, AND MAINTENANCE OF TURBIDITY SAMPLE CELLS AND CAPS
X3.1 Introduction
X3.2 Cleaning
FIG. X2.1 <\/td>\n<\/tr>\n
18<\/td>\nX3.3 Maintenance <\/td>\n<\/tr>\n
19<\/td>\nX4. CRITICAL VALUES OF F AT 1 % SIGNIFICANCE (99 % CONFIDENCE) LEVEL (ONE-SIDED)
FIG. X4.1 <\/td>\n<\/tr>\n
20<\/td>\nX5. DEFINITIONS RELATING TO THE OPTICAL DESIGN OF TURBIDIMETER INSTRUMENTATION
X5.1 Introduction
X5.2 Definitions <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

D7315-12 Standard Test Method for Determination of Turbidity Above 1 Turbidity Unit (TU) in Static Mode<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2012<\/td>\n21<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":86838,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[215,2637],"product_tag":[],"class_list":{"0":"post-86837","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-060-45","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/86837","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/86838"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=86837"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=86837"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=86837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}