| 摘要 |
<p>A recording device for recording results of a series of chemical tests, each of said tests being adapted to produce a change of colour or other visual texture of a test material, said recording device comprising: (a) a recording surface which is capable of being marked by a user of said test, (b) an array of recording zones on said recording surface, said zones comprising, for each of a respective series of accasions on which an example of said test is to be performed, a series of zones each to be associated with a respective possible outcome of said test on said occasion; and (c) said device also carrying, for each said zone, a representation of a colour or other visual texture of said test material corresponding to said respective possible outcome of said test. a</p> |
