Rubber - Specimen details
| Catalogue Number: 44086 | |||||
|---|---|---|---|---|---|
| No Image | Plant Name | 151.01 EUPHORBIACEAE Hevea brasiliensis | Entry Book Number | 118.1902 | |
| Artefact Name | Rubber | Vernacular Name | |||
| Iso Country | Malaysia | TDWG Region | Malaysia | ||
| Parts Held | Rubber | Geography Description | Selangor | ||
| Uses | RubberUse: MATERIALS - Latex/Rubber User: Man | TDWG use | MATERIALS - Latex/Rubber | ||
| Storage | Bottles, boxes etc | Related Items | |||
| Donor | Arden S | Donor No | |||
| Donor Date | Donor Notes | ||||
| Collector | Collector No | ||||
| Collection Notes | Collection Date | ||||
| Exhibition | Expedition | ||||
| Number Components | Publication | ||||
| Notes: | Label source: Sample no.VI Letter from Selangor, 10.11.02. Sir, I have the honour to forward by this mail seven samples of Para rubber for your inspection and with the request to submit to an expert, to decide what effect if any the various acids employe, d here upon the prepared article. The quantity of acid used in each case was exceedingly small. The samples are as follows. No 1. Nat coag. lated poured into plates and water evaporated. no 2. Coag by acetic, No 3. by nitric acid, no 4 by sulphuric acid, , no 5 by hydrochloric acid, no 6 naturally in collecting tins, and no 7 on the tree 'scrap'. The cultivation of rubber trees is being vigourously carried on throughout the Fed Malay States and it is of the utmost importance that when the time arrives for, extracting the rubber, we should be in a position to put the best samples on the market. I need hardly say that any information as to the best method of curing would be welcomed Stanley Arden, Supt, Experimental Plants., Federal Malay States. Opuscular, source: Letter back from Hecht, Levis and Kahn; We have examined the samples of para rubber from Selangor, which you submitted to us. We are not chemists, and can only judge the rubber from its elasticity strength and freedom from dust. With ordinary, hard cure fine para worth today 3/8d per lb, we should estimate the value of your samples as follows no 1 about 4/4 per lb, no 2 and 6 about 4/3d per lb, no 5 about 4/2d, no 4 about 4/1d, no 3 about 4/- and no 7 about 3/4d. Nos 3 and 4 are decidedly wea, ker than the others and on the whole we think the less acid used in coagulation the better. Sample no 1 coagulated without acid and is certainly the best of the lot. (19 Dec 1902) | ||||