The phrase "amount of the former" is correct and usable in written English.
It can be used when referring to a quantity or degree related to something previously mentioned, often in a comparative context.
Example: "The amount of the former was significantly higher than that of the latter, indicating a clear preference."
Alternatives: "quantity of the previous" or "degree of the earlier".
The loading amount of NPs in a shell composed of (ALG/CHI 5 was determined in two media i.e. H2O and 0.1 M NaCl, and the results showed that the loading amount of the former is greater than that of the latter.
The high molar ratio of KBH4 to 4-NP ensured an excess amount of the former, and hence, its concentration remained essentially constant during the reduction reaction.
This view is just one example of the thesis that some goods are "higher" than others, in the sense that any amount of the former is better than any amount of the latter.
Conversely, serum TSLP levels correlated well with those of HCV core protein, indicating an association between higher amounts of the former and HCV RNA-free structures.
It is a modus operandi that is being repeated today in Haiti, but under much worse conditions and this time with the parliament dominated by members of Préval's own coalition (several of them elected in highly disputed circumstances), though the amount of control the former president still exerts over the disparate group of legislators is a matter of some debate.
It's unclear the amount of money the former comedian seeks from each of the women.
But a California Watch review of the candidates' spending underscores the extraordinary amount of money the former eBay CEO spent in an effort to get traction against Attorney General and former governor Jerry Brown.
The study was span out with a challenging formulation design comprising ibuprofen compositions with varying particle size and a relatively low amount of the matrix former hydroxypropyl methylcellulose (HPMC).
The effective ratios in the 1000 Genomes Project datasets of ASN and EUR panel are similar to that in the HapMap dataset of the corresponding populations although the amount of SNPs of the former is much more than that of the latter.
Using DMA techniques we also demonstrated that when pure trehalose, a fragile glass-former, was diluted with a small amount of the strong glass-former, glycerol, the overall mixture was strengthened significantly.
