Browse Standards
Found: 225892 — page 4552 of 4707
Superseded
GB/T 7416-1987 — Malting barley
National·Recommended
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$285.00PDF
Superseded
GB/T 7417-1987 — AX series relays
National·Recommended
Instant delivery (0–9 sec)
$105.00PDF
Valid
GB/T 7419-1987 — Information processing. Implementation of the 7-bit coded character set and its 7-bit and 8-bit extensions on 3.81mm magnetic tape cassette for data interchange
National·Recommended
Instant delivery (0–9 sec)
$49.002 pages
Superseded
GB/T 7421-1987 — Information processing systems--Data communication--High level data link control procedures--Consolidation of classes of procedures
National·Recommended
Instant delivery (0–9 sec)
$1,520.00PDF
Withdrawn
GB/T 7422.1-1987 — 16×12, 16×8, 16×4 Dot matrix font set and data set of Mongolian characters for information interchange
National·Recommended
Instant delivery (0–9 sec)
$40.00PDF
Withdrawn
GB/T 7422.2-1987 — 16×12, 16×8, 16×4 Dot matrix data set of Mongolian characters for information interchange
National·Recommended
Instant delivery (0–9 sec)
$135.00PDF
Valid
GB/T 7423.1-1987 — Heat sink of semiconductor devices--Generic specification
National·Recommended
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$95.0010 pages
Valid
GB/T 7423.2-1987 — Heat sink of semiconductor devices. Heat sink, Extruded shapes
National·Recommended
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$724.0014 pages
Valid
GB/T 7423.3-1987 — Heat sink of semiconductor devices. Heat sink, staggered fingers shapes
National·Recommended
Instant delivery (0–9 sec)
$1,204.0025 pages
Withdrawn
GB/T 7432-1987 — Immunity specification of coaxial cable carrier system to the interference from the radio broadcasting and telecommunication
National·Recommended
Instant delivery (0–9 sec)
$205.00PDF
Withdrawn
GB/T 7433-1987 — Immunity specification of symmetrical cable carrier system to the interference from the radio broadcasting and telecommunication
National·Recommended
Instant delivery (0–9 sec)
$205.00PDF
Withdrawn
GB/T 7434-1987 — Immunity specification of open wire carrier system to the interference from the radio broadcasting and telecommunication
National·Recommended
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$205.00PDF
Valid
GB/T 7436-1987 — Specifications of TDM equipment operating on analog telephone-type circuit for telegraph and lower-speed data
National·Recommended
Instant delivery (0–9 sec)
$225.0015 pages
Withdrawn
GB/T 7438-1987 — Numbering for telex and low speed data in national communication network
National·Recommended
Instant delivery (0–9 sec)
$165.00PDF
Withdrawn
GB/T 7440-1987 — Calculating methods and measuring methods for transmission parameters of open-wire communication lines
National·Recommended
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$395.00PDF
Superseded
GB/T 7441-1987 — Noise measurement method for the power plant turbine generator
National·Recommended
Instant delivery (0–9 sec)
$205.00PDF
Superseded
GB/T 7449-1987 — Guide to the lightning impulse and switching impulse testing of power transformers and reactors
National·Recommended
Instant delivery (0–9 sec)
$415.00PDF
Superseded
GB/T 7450-1987 — Guidance for lightning protection for electronic equipments
National·Recommended
Instant delivery (0–9 sec)
$329.00PDF
Superseded
GB/T 7451-1987 — Electric light source vocabulary
National·Recommended
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$604.00PDF
Superseded
GB/T 7452-1987 — Guidelines for the evaluation of ship vibration
National·Recommended
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$169.00PDF
Superseded
GB/T 7453-1987 — Measurement of ship vibration
National·Recommended
Instant delivery (0–9 sec)
$249.00PDF
Superseded
GB/T 7462-1987 — Surface active agents--Measurement of foaming power--Modified Ross-Miles method
National·Recommended
Instant delivery (0–9 sec)
$210.00PDF
Superseded
GB/T 7463-1987 — Surface active agents--Determination of the power to disperse calcium soap--Acidimetric method (Modified Schoenfeldt method)
National·Recommended
Instant delivery (0–9 sec)
$150.00PDF
Valid
GB/T 7466-1987 — Water quality--Determination of total chromium
National·Recommended
Instant delivery (0–9 sec)
$135.0010 pages
Valid
GB/T 7467-1987 — Water quality--Determination of chromium(VI)--1, 5 Diphenylcarbohydrazide spectrophotometric method
National·Recommended
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$85.0015 pages
Superseded
GB/T 7468-1987 — Water quality--Determination of total mercury--Cold atomic absorption spectrophotometry
National·Recommended
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$289.00PDF
Valid
GB/T 7469-1987 — Water quality. Determination of total mercury. Potassium permanganate-potassium persulfate decomposed method. Dithizone spectrophotometric method
National·Recommended
Instant delivery (0–9 sec)
$164.004 pages
Valid
GB/T 7470-1987 — Water quality. Determination of lead. Spectrophotometric method with dithizone
National·Recommended
Instant delivery (0–9 sec)
$144.003 pages
Valid
GB/T 7471-1987 — Water quality. Determination of cadmium. Spectrophotometric method with dithizone
National·Recommended
Instant delivery (0–9 sec)
$194.004 pages
Valid
GB/T 7472-1987 — Water quality--Determination of zinc--Spectrophotometric method with dithizone
National·Recommended
Instant delivery (0–9 sec)
$95.0010 pages
Withdrawn
GB/T 7473-1987 — Water quality--Determination of copper--2, 9-Dimethyl-1, 10-phenanthroline spectrophotometric method
National·Recommended
Instant delivery (0–9 sec)
$79.00PDF
Withdrawn
GB/T 7474-1987 — Water quality--Determination of copper--Sodium diethyldithiocarbamate spectrophotometric method
National·Recommended
Instant delivery (0–9 sec)
$79.00PDF
Valid
GB/T 7475-1987 — Water quality. Determination of copper, zinc, lead and cadmium. Atomic absorption spectrometry
National·Recommended
Instant delivery (0–9 sec)
$85.006 pages
Valid
GB/T 7476-1987 — Water quality. Determination of calcium. EDTA titrimetric method
National·Recommended
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$25.004 pages
Valid
GB/T 7477-1987 — Water quality. Determination of the sum of calcium and magnesium. EDTA titrimetric method
National·Recommended
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$100.004 pages
Withdrawn
GB/T 7478-1987 — Water quality--Determination of ammonium--Distillation and titration method
National·Recommended
Instant delivery (0–9 sec)
$79.00PDF
Withdrawn
GB/T 7479-1987 — Water quality--Determination of ammonium-Nesslerreagent colorimetric method
National·Recommended
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$79.00PDF
Valid
GB/T 7480-1987 — Water quality--Determination of nitrate--Spectrophotometric method with phenol disulfonic acid
National·Recommended
Instant delivery (0–9 sec)
$100.0015 pages
Withdrawn
GB/T 7481-1987 — Water quality--Determination of ammonium--Spectrophotometric method with salicylic acid
National·Recommended
Instant delivery (0–9 sec)
$79.00PDF
Withdrawn
GB/T 7482-1987 — Water quality--Determination of fluoride--Visual colorimetry with zirconium alizarinsulfonate
National·Recommended
Instant delivery (0–9 sec)
$165.00PDF
Superseded
GB/T 7483-1987 — Water quality--Determination of fluoride--Fluor reagent spectrophotometric method
National·Recommended
Instant delivery (0–9 sec)
$169.00PDF
Valid
GB/T 7484-1987 — Water quality--Determination of fluoride--Ion selective electrode method
National·Recommended
Instant delivery (0–9 sec)
$40.0015 pages
Valid
GB/T 7485-1987 — Water quality. Determination of total arsenic. Silver diethyldithiocarbamate spectrophotometric method
National·Recommended
Instant delivery (0–9 sec)
$95.004 pages
Withdrawn
GB/T 7486-1987 — Water quality--Determination of cyanide--Part 1: Determination of total cyanide
National·Recommended
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$79.00PDF
Superseded
GB/T 7487-1987 — Water quality--Determination of cyanide--Part 2: Determination of cyanide
National·Recommended
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$105.00PDF
Superseded
GB/T 7488-1987 — Water quality--Determination of biochemical oxygen demand after 5 days (BOD5)--Dilution and seeding method
National·Recommended
Instant delivery (0–9 sec)
$169.00PDF
Valid
GB/T 7489-1987 — Water quality. Determination of dissolved oxygen. Iodometric method
National·Recommended
Instant delivery (0–9 sec)
$169.005 pages
Superseded
GB/T 7490-1987 — Water quality--Determination of volatile phenolic compounds--After distillation by means of 4-AAP spectrophotometric method
National·Recommended
Instant delivery (0–9 sec)
$85.00PDF