BUREAU OF INDIAN STANDARDS
Programme of Work
MHD4 : Ear, Nose, Throat and Head & Neck Surgery (ENT - H&N) Instruments
- Scope : To formulate Indian Standards for diagnostic, examining, surgical instruments, devices and implants used in Ear, Nose, Throat and Head & Neck Surgery, excluding specific instruments under the scope of MHD 01 “Surgical Instruments” and MHD 08 “Dentistry”.
-
Liaison :
|
IS 10272:2025 |
ENT Surgery Instruments - Draffin Suspension Apparatus - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 10344:2024 |
Davis-Boyle Gag Frame and Tongue Plates Specification First Revision
|
-
|
Indigenous
|
||
|
IS 10725:2024 |
Myringotomy Knife Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 10726:2024 |
Meatal Skin Incision Knife Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 10786:2024 |
St. Clair Thomsons Rhinoscopic Mirror Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 10846:2024 |
Killian's Pattern Nasal Speculum - Specification ( First Revision )
|
-
|
Indigenous
|
||
|
IS 11318:1985 Reviewed In : 2022 |
Specification of bronchoscope Aspirating, Negus’ Pattern
|
January, 2022
|
-
|
Indigenous
|
|
|
IS 11319:1985 Reviewed In : 2022 |
Oesophagoscope, Negus' Pattern
|
January, 2022
|
-
|
Indigenous
|
|
|
IS 12901 (Part 1):2024 |
Laryngeal Forceps Part 1 Fine Grasping Crocodile Jaws Straight Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 12901 (Part 2):2024 |
Laryngeal Forceps Part 2 Oval Cup Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 13169:2025 |
ENT Surgery Instruments - Head Mirror - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 17407:2020 |
Digital Otoscope — Handheld Type
|
-
|
Indigenous
|
||
|
IS 17750 (Part 7):2021 ISO 14708-7:2019 |
Implants for surgery Active implantable medical devices Part 7: Particular requirements for cochlear and auditory brainstem Implant Systems(First Revision)
|
-
|
Identical under dual numbering
|
||
|
IS 19383:2025 |
Audiometric Test Room - Specification
|
-
|
|||
|
IS 19476:2025 |
Pure-tone and Speech Audiometers - Specification
|
-
|
|||
|
IS 3758:2018 Reviewed In : 2023 |
Hooks, aural - Specification (First Revision)
|
June, 2023
|
-
|
Indigenous
|
|
|
IS 3760:2021 |
Probe, Aural, Jobson Horne’s Pattern — Specification (First Revision of IS 3760)
|
-
|
Indigenous
|
||
|
IS 3788:2024 |
Aural Specula Specification First Revision
|
-
|
Indigenous
|
||
|
IS 3799:2019 Reviewed In : 2023 |
Forceps, aural and nasal, crocodile action - Specification (First Revision)
|
June, 2023
|
-
|
Indigenous
|
|
|
IS 3807:2024 |
Aural and Nasal Dressing Forceps Specification (Second Revision)
|
-
|
Indigenous
|
||
|
IS 4487:2024 |
ENT Surgery Instruments - Forceps ,Tonsil Artery (Birketts Pattern) - Specification (Second Revision)
|
-
|
Indigenous
|
||
|
IS 4488:2018 Reviewed In : 2023 |
Forceps, Tonsil Holding (Muck's and White's Patterns) Specification ( First Revision )
|
February, 2023
|
-
|
Indigenous
|
|
|
IS 4489:2018 Reviewed In : 2023 |
Forceps, Nasal Turbinate, Luc’s — Specification ( First Revision )
|
February, 2023
|
-
|
Indigenous
|
|
|
IS 4504:2018 Reviewed In : 2023 |
Forceps, peritonsillar - Specification (First Revision)
|
May, 2023
|
-
|
Indigenous
|
|
|
IS 4514:2018 Reviewed In : 2023 |
Forceps, Tonsil Dissecting (Waugh's Pattern) - Specification ( First Revision )
|
February, 2023
|
-
|
Indigenous
|
|
|
IS 4520:2018 Reviewed In : 2023 |
Forceps, Punch, Nasal Citelli's Antrum and Hajek's Sphenoidal— Specification (First Revision)
|
February, 2023
|
-
|
Indigenous
|
|
|
IS 4959:2018 Reviewed In : 2023 |
Raspatory, Nasal, Howarth's— Specification (First Revision)
|
February, 2023
|
-
|
Indigenous
|
|
|
IS 4994:2025 |
ENT Surgery Instruments - Redressing Forceps - Walsham's pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 5338:2024 |
Eustachian Catheter Specification First Revision
|
-
|
Indigenous
|
||
|
IS 5377:2025 |
ENT Surgery Instruments - Nasal Speculum - Thudichum's Pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 5412:2025 |
ENT Surgery Instruments - Nasal Saws - Joseph's pattern - specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 5720:2024 |
Mollison's Pattern Self-Retaining Mastoid Retractor Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 5723:2024 |
Mallet with Fluted/Milled Handle for ENT Surgery - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 5747:2024 |
Lempert's Pattern Endaural Retractor - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 6464:2000 Reviewed In : 2023 |
ENT Diagnostic Instruments - Tuning Forks (Gardiner Brown's Pattern)
|
February, 2023
|
-
|
Indigenous
|
|
|
IS 6465:2025 |
ENT Surgery Instruments - Antral Trocar with Cannula - Tilley Lichtwitz's Pattern - Specification (First Revision )
|
-
|
Indigenous
|
||
|
IS 6514:2025 |
ENT Surgery Instruments - Nasal Cartilage Knife - Ballenger's Pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 7710:2025 |
ENT Surgery Instruments -Tonsil Snare- Eves Pattern - Specification (First Revision )
|
-
|
Indigenous
|
||
|
IS 7712:2025 |
ENT Surgery Instruments - Adenoid Curette - St. Clair Thomson's Pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 7713:2025 |
ENT Surgery Instruments - Retractor - Weislander's Pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 7756:2025 |
ENT Surgery Instruments - Tongue Depressor - Lack's Pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8093:2025 |
ENT Surgery Instruments - Curette - Ballance�s Pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8094:2024 |
Cawthornes Pattern Cerumen Hook Specification First Revision
|
-
|
Indigenous
|
||
|
IS 8128:2024 |
Farabeuf's Pattern Elevator Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8129:2024 |
Forceps - Tonsil Artery, Curved (Scotts Pattern) - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8136:2024 |
Dundas Grant's Pattern Seeker Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8157:2024 |
Heath's Pattern Granulation Forceps Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8199:1976 Reviewed In : 2018 |
Specification for Tracheostomy Tubes, Fuller's Pattern
|
February, 2018
|
-
|
Indigenous
|
|
|
IS 8315:2025 |
ENT Surgery Instruments - Redressing Forceps - Asch�s Pattern - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8316:1977 |
Retractor, Hajek's Pattern
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 8327:1977 Reviewed In : 2021 |
Forceps, Nodule, Vocal, Chevalier Jackson's Pattern
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 8343:1977 Reviewed In : 2021 |
Forceps, Biopsy, Peterson's Pattern
|
January, 2021
|
1
|
Indigenous
|
|
|
IS 8734:1978 Reviewed In : 2021 |
Forceps, Cutting and Removing Large Specimens, Chevalier Jackson's Pattern
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 8735:1978 Reviewed In : 2021 |
Tube, Suction, Yankauer's Pattern
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 8743:1994 Reviewed In : 2021 |
ENT surgery instruments - Forceps, direct bronchoscopy, with alligator jaws and tenaculum points, Irwin Moore's pattern
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 8825:2025 |
ENT Surgery Instruments - Suction Irrigation Cannula - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8837:2025 |
ENT Surgery Instruments - Suction Tube with Stylet - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 8838:1978 Reviewed In : 2021 |
Specification for forceps, cup, straight, microlaryngeal surgery
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 8839:1978 Reviewed In : 2021 |
Specification for forceps,cup upwards, microlaryngeal surgery
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 8840:1978 Reviewed In : 2021 |
Specification for scissors, microlaryngeal surgery
|
January, 2021
|
-
|
Indigenous
|
|
|
IS 9058:2024 |
Zoellner's Pattern Upward Cutting Knife Specification - (First Revision)
|
-
|
Indigenous
|
||
|
IS 9059:2024 |
Zoellner's Pattern Downward Cutting Knife Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 9479:2024 |
Shea's Pattern 25, 45, and 90 Angle Fenestra Hook for Ear Surgery - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 9480:2024 |
Shea's Pattern Left and Right Elevators For Ear Surgery - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 9526:2024 |
Crocodile Jaw Stapedectomy Scissors - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 9544:2024 |
Round Cup, Elongated Cup and Oval Cup Jaws Stapedectomy Forceps - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 9558:1980 Reviewed In : 2023 |
Specification for gauge, depth, ptfe (Teflon) piston
|
February, 2023
|
-
|
Indigenous
|
|
|
IS 9564:2024 |
Serrated, Smooth and Mc Gee Wire Closing Jaws Stapedectomy Forceps - Specification (First Revision)
|
-
|
Indigenous
|
||
|
IS 9718:2025 |
PTFE Piston Cutting Jig � Specification (First Revision)
|
-
|
Indigenous
|
| No Records Found |
| No Records Found |
MHD 4 (26681) Revision of: IS 8343:1977 |
Ent Surgery Instruments Biopsy Forceps Petersons Pattern Specification First Revision |
| No Records Found | ||
MHD 4 (25258)
|
ENT Surgery Instruments Otology Drill Specification |
|
MHD 4 (26669)
Amendment of: IS 8327:1977 |
ENT Surgery Instruments Chevalier Jackson s Type Pattern Vocal Nodule Forceps Specification First Revision |
|
MHD 4 (26674)
Amendment of: IS 8734:1978 |
ENT Surgery Instruments Chevalier Jackson s Type Pattern Forceps Specification First Revision |
|
MHD 4 (26683)
Amendment of: IS 8743:1994 |
ENT Surgery Instruments Irwin Moore 039 s Type Pattern Direct Bronchoscopy Forceps Specification Second Revision |
|
MHD 4 (26686)
Amendment of: IS 8838:1978 |
ENT Surgery Instruments Straight Cup Forceps Specification First Revision |
|
MHD 4 (26687)
Amendment of: IS 8839:1978 |
ENT Surgery Instruments Upwards Cup Forceps Specification First Revision |
|
MHD 4 (26688)
Amendment of: IS 8840:1978 |
ENT Surgery Instruments Scissors Specification First Revision |
|
MHD 4 (32921)
|
PTFE Teflon Piston Depth Gauge Specification First revision |
|
MHD 4 (25256)
|
ENT Workstation | |
|
MHD 4 (26136)
|
Ossicular Reconstruction Prosthesis- Specification | |
|
MHD 4 (26675)
Amendment of: IS 8735:1978 |
ENT Surgery Instruments Yankauer 039 s type pattern Suction Tube Specification First Revision | |
|
MHD 4 (26919)
|
Audiometric Test Room - Specification | |
|
MHD 4 (27915)
|
Pure-tone and Speech Audiometers - Specification | |
|
MHD 4 (32918)
|
Digital Otoscope Handheld Type | |
|
MHD 4 (33319)
|
ENT Diagnostic Instruments - Tuning Forks Specification | |
|
MHD 4 (33324)
|
ENT Surgery Instruments Microdebrider Specification | |
|
MHD 4 (33590)
|
Ear ventilation tubes-Specification |
|
|
IS 10308:1982 Reviewed In : 2022 |
Tracheostomy Tubes and Guides Cubley s Pattern |
|
|
IS 12901:1990 Reviewed In : 2022 |
ENT surgery instruments - Laryngeal fine grasping forceps crocodile jaws straight - Specification |
|
|
IS 12911:1990 Reviewed In : 2022 |
ENT surgery instruments - Laryngeal forceps oval cup - Specification |
|
|
IS 13179:1991 Reviewed In : 2022 |
Ent Surgery Instruments - Tracheostomy Tubes Chevaliar Jackson s Pattern |
|
|
IS 5140:1969 Reviewed In : 2018 |
Specification for auriscope |
|
|
IS 5147:1969 Reviewed In : 2023 |
SPECIFICATION FOR EXAMINATION LAMP WITH BULL 39 S EYE CONDENSER FLOOR MODEL |
|
|
IS 5357:1969 Reviewed In : 2013 |
Metallic Ear Syringe |
|
|
IS 5732:1970 Reviewed In : 2023 |
Gouge Mastoid Jenkins Pattern |
|
|
IS 6463:1972 Reviewed In : 2023 |
Burs Antrum Tilley s Pattern |
|
|
IS 6469:1972 Reviewed In : 2013 |
Harpoon Trocar Tilley s Pattern |
|
|
IS 6470:1972 Reviewed In : 2013 |
Politzerization Apparatus Pritchard s pattern |
|
|
IS 7007:1973 Reviewed In : 2022 |
Specification for E E N T Eye Ear Nose And Throat diagnostic set |
|
|
IS 7282:1975 Reviewed In : 2023 |
Chisel Labyrinth Straight Lake s Pattern |
|
|
IS 7711:1975 Reviewed In : 2023 |
Curette Adenoid Beckmann s Pattern |
|
|
IS 8158:1976 |
Needle Eye Bowmans Pattern |
|
|
IS 8191:1976 Reviewed In : 2023 |
Retractor Pillar Anterior and Tonsil Enucleator Mollison s Pattern |
|
|
IS 8344:1977 Reviewed In : 2021 |
Snare Aural Glegg s Pattern |
|
|
IS 9014:1979 Reviewed In : 2021 |
Specification for Raspatory fine curved right Zoellner 39 s Pattern |
|
|
IS 9015:1979 Reviewed In : 2021 |
Raspatory Fine Curved Left Zoellner s Pattern |
|
|
IS 9016:1979 Reviewed In : 2021 |
Needle Fine Spear Pointed Curved Right Zoellner s Pattern |
|
|
IS 9017:1979 Reviewed In : 2021 |
Needle Fine Spear Pointed Curved Left Zoellner s Pattern |
|
|
IS 9060:1979 Reviewed In : 2021 |
Hook Small Zoellner s Pattern |
|
IS 10272:2025 |
ENT Surgery Instruments - Draffin Suspension Apparatus - Specification First Revision |
|
|
IS 10344:2024 |
Davis-Boyle Gag Frame and Tongue Plates Specification First Revision |
|
|
IS 10725:2024 |
Myringotomy Knife Specification First Revision |
|
|
IS 10726:2024 |
Meatal Skin Incision Knife Specification First Revision |
|
|
IS 10786:2024 |
St Clair Thomsons Rhinoscopic Mirror Specification First Revision |
|
|
IS 10846:2024 |
Killian 39 s Pattern Nasal Speculum - Specification First Revision |
|
|
IS 11318:1985 Reviewed In : 2022 |
Specification of bronchoscope Aspirating Negus Pattern |
|
|
IS 11319:1985 Reviewed In : 2022 |
Oesophagoscope Negus Pattern |
|
|
IS 12901 (Part 1):2024 |
Laryngeal Forceps Part 1 Fine Grasping Crocodile Jaws Straight Specification First Revision |
|
|
IS 12901 (Part 2):2024 |
Laryngeal Forceps Part 2 Oval Cup Specification First Revision |
|
|
IS 13169:2025 |
ENT Surgery Instruments - Head Mirror - Specification First Revision |
|
|
IS 17407:2020 |
Digital Otoscope Handheld Type |
|
|
IS 17750 (Part 7):2021 ISO 14708-7:2019 |
Implants for surgery Active implantable medical devices Part 7 Particular requirements for cochlear and auditory brainstem Implant Systems First Revision |
|
|
IS 3758:2018 Reviewed In : 2023 |
Hooks aural - Specification First Revision |
|
|
IS 3760:2021 |
Probe Aural Jobson Horne s Pattern Specification First Revision of IS 3760 |
|
|
IS 3788:2024 |
Aural Specula Specification First Revision |
|
|
IS 3799:2019 Reviewed In : 2023 |
Forceps aural and nasal crocodile action - Specification First Revision |
|
|
IS 3807:2024 |
Aural and Nasal Dressing Forceps Specification Second Revision |
|
|
IS 4487:2024 |
ENT Surgery Instruments - Forceps Tonsil Artery Birketts Pattern - Specification Second Revision |
|
|
IS 4488:2018 Reviewed In : 2023 |
Forceps Tonsil Holding Muck 39 s and White 39 s Patterns Specification First Revision |
|
|
IS 4489:2018 Reviewed In : 2023 |
Forceps Nasal Turbinate Luc s Specification First Revision |
|
|
IS 4504:2018 Reviewed In : 2023 |
Forceps peritonsillar - Specification First Revision |
|
|
IS 4514:2018 Reviewed In : 2023 |
Forceps Tonsil Dissecting Waugh 39 s Pattern - Specification First Revision |
|
|
IS 4520:2018 Reviewed In : 2023 |
Forceps Punch Nasal Citelli 39 s Antrum and Hajek 39 s Sphenoidal Specification First Revision |
|
|
IS 4959:2018 Reviewed In : 2023 |
Raspatory Nasal Howarth 39 s Specification First Revision |
|
|
IS 4994:2025 |
ENT Surgery Instruments - Redressing Forceps - Walsham 39 s pattern - Specification First Revision |
|
|
IS 5338:2024 |
Eustachian Catheter Specification First Revision |
|
|
IS 5377:2025 |
ENT Surgery Instruments - Nasal Speculum - Thudichum 39 s Pattern - Specification First Revision |
|
|
IS 5412:2025 |
ENT Surgery Instruments - Nasal Saws - Joseph 39 s pattern - specification First Revision |
|
|
IS 5720:2024 |
Mollison 39 s Pattern Self-Retaining Mastoid Retractor Specification First Revision |
|
|
IS 5723:2024 |
Mallet with Fluted Milled Handle for ENT Surgery - Specification First Revision |
|
|
IS 5747:2024 |
Lempert 39 s Pattern Endaural Retractor - Specification First Revision |
|
|
IS 6464:2000 Reviewed In : 2023 |
ENT Diagnostic Instruments - Tuning Forks Gardiner Brown s Pattern |
|
|
IS 6465:2025 |
ENT Surgery Instruments - Antral Trocar with Cannula - Tilley Lichtwitz 39 s Pattern - Specification First Revision |
|
|
IS 6514:2025 |
ENT Surgery Instruments - Nasal Cartilage Knife - Ballenger 39 s Pattern - Specification First Revision |
|
|
IS 7710:2025 |
ENT Surgery Instruments -Tonsil Snare- Eves Pattern - Specification First Revision |
|
|
IS 7712:2025 |
ENT Surgery Instruments - Adenoid Curette - St Clair Thomson 39 s Pattern - Specification First Revision |
|
|
IS 7713:2025 |
ENT Surgery Instruments - Retractor - Weislander 39 s Pattern - Specification First Revision |
|
|
IS 7756:2025 |
ENT Surgery Instruments - Tongue Depressor - Lack 39 s Pattern - Specification First Revision |
|
|
IS 8093:2025 |
ENT Surgery Instruments - Curette - Ballance s Pattern - Specification First Revision |
|
|
IS 8094:2024 |
Cawthornes Pattern Cerumen Hook Specification First Revision |
|
|
IS 8128:2024 |
Farabeuf 39 s Pattern Elevator Specification First Revision |
|
|
IS 8129:2024 |
Forceps - Tonsil Artery Curved Scotts Pattern - Specification First Revision |
|
|
IS 8136:2024 |
Dundas Grant 39 s Pattern Seeker Specification First Revision |
|
|
IS 8157:2024 |
Heath 39 s Pattern Granulation Forceps Specification First Revision |
|
|
IS 8199:1976 Reviewed In : 2018 |
Specification for Tracheostomy Tubes Fuller 39 s Pattern |
|
|
IS 8315:2025 |
ENT Surgery Instruments - Redressing Forceps - Asch s Pattern - Specification First Revision |
|
|
IS 8316:1977 |
Retractor Hajek s Pattern |
|
|
IS 8327:1977 Reviewed In : 2021 |
Forceps Nodule Vocal Chevalier Jackson s Pattern |
|
|
IS 8343:1977 Reviewed In : 2021 |
Forceps Biopsy Peterson s Pattern |
|
|
IS 8734:1978 Reviewed In : 2021 |
Forceps Cutting and Removing Large Specimens Chevalier Jackson s Pattern |
|
|
IS 8735:1978 Reviewed In : 2021 |
Tube Suction Yankauer s Pattern |
|
|
IS 8743:1994 Reviewed In : 2021 |
ENT surgery instruments - Forceps direct bronchoscopy with alligator jaws and tenaculum points Irwin Moore s pattern |
|
|
IS 8825:2025 |
ENT Surgery Instruments - Suction Irrigation Cannula - Specification First Revision |
|
|
IS 8837:2025 |
ENT Surgery Instruments - Suction Tube with Stylet - Specification First Revision |
|
|
IS 8838:1978 Reviewed In : 2021 |
Specification for forceps cup straight microlaryngeal surgery |
|
|
IS 8839:1978 Reviewed In : 2021 |
Specification for forceps cup upwards microlaryngeal surgery |
|
|
IS 8840:1978 Reviewed In : 2021 |
Specification for scissors microlaryngeal surgery |
|
|
IS 9058:2024 |
Zoellner 39 s Pattern Upward Cutting Knife Specification - First Revision |
|
|
IS 9059:2024 |
Zoellner 39 s Pattern Downward Cutting Knife Specification First Revision |
|
|
IS 9479:2024 |
Shea 39 s Pattern 25 45 and 90 Angle Fenestra Hook for Ear Surgery - Specification First Revision |
|
|
IS 9480:2024 |
Shea 39 s Pattern Left and Right Elevators For Ear Surgery - Specification First Revision |
|
|
IS 9526:2024 |
Crocodile Jaw Stapedectomy Scissors - Specification First Revision |
|
|
IS 9544:2024 |
Round Cup Elongated Cup and Oval Cup Jaws Stapedectomy Forceps - Specification First Revision |
|
|
IS 9558:1980 Reviewed In : 2023 |
Specification for gauge depth ptfe Teflon piston |
|
|
IS 9564:2024 |
Serrated Smooth and Mc Gee Wire Closing Jaws Stapedectomy Forceps - Specification First Revision |
|
|
IS 9718:2025 |
PTFE Piston Cutting Jig Specification First Revision |